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Normal watermelon weight. How much does a watermelon weigh?

Normal watermelon weight. How much does a watermelon weigh?

"A watermelon weighs 3 kilograms and half a watermelon. How much does a watermelon weigh?"

Question in more detail:
Our department, consisting of qualified engineers (television, communications), was blown away by the problem: “A watermelon weighs 3 kilograms and half a watermelon. How much does a watermelon weigh?”
Colleagues' opinions were divided. I ask the author to provide an official chain of reasoning leading to the correct result.
Best regards, Alexey Silyakov.

Answer:

Dear Mr. Alexey Silyakov!

When we say that “a watermelon weighs 3 kilograms and 500 g,” then, in accordance with the norms of the Russian language, we understand that the mass of a watermelon is 3 kg 500 g.

According to the conditions of the problem you cited, the mass of the watermelon is “3 kg and half a watermelon.” Therefore, 3 kg falls on half of the watermelon, and therefore the mass of the entire watermelon is 3 kg + 3 kg = 6 kg.

When solving this problem, they often make a logical mistake, believing that 3 kg is the mass of the entire watermelon. Then add half of this mass to 3 kg and find that the mass of the same watermelon is 4.5 kg (that is, x = x + x/2, where x = 3 kg) - hence the second answer. But the same watermelon cannot weigh 3 kg and 4.5 kg (x is not equal to 1.5 x when x is different from zero), so this reasoning is incorrect.

Other reasoning is also possible, but in all cases known to us they also lead to a contradiction.

In general, from our point of view, the main task of mathematics is school subject, first of all, teach children to reason, accurately express their thoughts, and justify their judgments. This is exactly what every person needs in life to solve everyday problems and professional problems(and not only and not so much knowledge, for example, of properties logarithmic function and conversion formulas trigonometric expressions). It’s not for nothing that they say, “education is what remains when everything learned is forgotten.”

In the Soviet school, which many highly qualified specialists working today went through, the emphasis was placed precisely on the assimilation of knowledge, developing the ability to act according to an algorithm clearly defined by the teacher. Therefore, children sometimes solve problems that do not require any special mathematical knowledge, but only attention, logic and the ability to perform simple arithmetic operations better than adults.

The fact that your respected department, consisting of qualified engineers (television, communications), “blown their heads” with the watermelon problem speaks of its pedagogical value, because in the same way it involves children in the process of finding the logic of the solution, and this makes a significant contribution in their education. And if this search is carried out by adults and children in the family, then this is also a contribution to the spiritual health and culture of the family.

Sincerely, Lyudmila Georgievna Peterson.

How much does 1 cube of pumpkin watermelons weigh? The weight of 1 m3 of melon and melon watermelons per chestnut. The number of kilograms in 1 cubic meter of kavuns (Astrakhan, Kuban), melons, the number of tons in 1 cubic meter of pumpkin, kg in 1 m3 of pumpkin Citrullus lanatus. Bulk density of watermelons; specific gravity of kavuns, melon crops, Kuban watermelons, and bashtans.

What do we want to learn today? How much does 1 cube of watermelons, kavuns, weigh 1 m3 of Astrakhan melon and melon watermelons? No problem, you can find out the number of kilograms or the number of tons at once, the weight of the melon harvest (the weight of one cubic meter of pumpkin, the weight of one cube of melons, the weight of one cubic meter of pumpkin, the weight of 1 m3 of Citrullus lanatus) are indicated in table 1. If anyone is interested, you can skim the small text below and read some explanations. How is the amount of substance, material, liquid or gas we need measured? Except for those cases when it is possible to reduce the calculation of the required quantity to the counting of goods, products, elements in pieces (piece counting), it is easiest for us to determine the required quantity based on volume and weight (mass). In everyday life, the most common unit of volume measurement for us is 1 liter. However, the number of liters suitable for household calculations is not always an applicable method for determining the volume for economic activity. In addition, liters in our country have not become a generally accepted “production” and trading unit for measuring volume. One cubic meter, or in its abbreviated version - one cube, turned out to be quite convenient and popular for practical use unit of volume. We are accustomed to measuring almost all substances, liquids, materials and even gases in cubic meters. It's really convenient. After all, their costs, prices, rates, consumption rates, tariffs, supply contracts are almost always tied to cubic meters (cubes), and much less often to liters. No less important for practical activities it turns out to be knowledge not only of the volume, but also of the weight (mass) of the substance occupying this volume: in we are talking about how much 1 cube of kavuns weighs (1 cubic meter of pumpkin - melons, 1 cubic meter of Citrullus lanatus, 1 m3 of melons). Knowing the mass and volume gives us a fairly complete idea of the quantity of watermelon berries. Site visitors, when asking how much 1 cube of watermelons (Astrakhan, Kuban) weighs, often indicate specific units of mass in which they would like to know the answer to the question. As we noticed, most often they want to know the weight of 1 cube of kavuns (1 cubic meter of Citrullus lanatus, melons, 1 cubic meter of watermelon berries, 1 m3 of melons) in kilograms (kg) or in tons (t). Essentially, you need kg/m3 or t/m3. These are closely related units that determine the amount of melon harvest. In principle, it is possible to independently recalculate the weight (mass) of melons and melons from tons to kilograms and vice versa: from kilograms to tons. However, as practice has shown, for most site visitors a more convenient option would be to immediately find out how many kilograms 1 cubic (1 m3) of watermelons weighs or how many tons 1 cubic (1 m3) of watermelons or melons weighs, without converting kilograms into tons or vice versa - number of tons in kilograms per cubic meter (one cubic meter, one cubic meter, one m3). Therefore, in Table 1 we indicated how much 1 cube of kavuns weighs (1 cubic meter of pumpkin, 1 cubic meter of watermelon berries from a chestnut) in kilograms (kg) and in tons (t). Choose the table column that you need yourself. By the way, when we ask how much 1 cube (1 m3) of watermelons weighs, we mean the number of kilograms of pumpkin or the number of tons of melon harvest. However, from a physical point of view, we are interested in the bulk density of melons or the specific gravity of watermelons. The mass of a unit volume or the amount of substance contained in a unit volume is the volumetric density of a watermelon berry or the specific gravity of the watermelon berry, Citrullus lanatus (Astrakhan, Kuban). In this case bulk density of kavuns and specific gravity of watermelons and melon crop. In physics, the density of melons, pumpkins, mashets and the specific gravity of watermelon berries is usually measured not in kg/m3 or in tons/m3, but in grams per cubic centimeter: g/cm3. Therefore, in Table 1, the specific gravity of kavuns and the bulk density of watermelons (synonyms) are indicated in grams per cubic centimeter (g/cm3)

Table 1. How much does 1 cube of watermelons, melons, and kavuns weigh? The weight of 1 m3 of watermelons per chestnut. Bulk density of watermelons and specific gravity of watermelons in g/cm3. How many kilograms in a cube of pumpkin - melon crop, tons in 1 cubic meter of watermelon berry - melon crop, kg in 1 cubic meter of pumpkin, Kuban watermelons, tons in 1 m3 of melons, melons.

Few people know, but watermelon is not only a melon crop, but also an herbaceous plant.

In this article we will look at how much a watermelon weighs, which specimens are found in nature, and which are grown by farmers.

Watermelon weight

Watermelon is often called a melon berry, and in this sense, watermelon is the largest berry on the planet. In nature, watermelons are no longer found so often; they are mainly grown on farms. Some specimens barely reach 10 kg in weight. While farmed watermelons can weigh over 30 kg.
The weight of a watermelon depends on its variety, which, in turn, will depend on the type of soil and fertilizers that were added to it.

Astrakhan watermelon weighs from 10 kilograms.
The so-called Crimson Sweet weighs around 5 kilograms, Crimson Glory can reach 15 kilograms in weight.
Madera weighs around 80 kilograms. The watermelon with the unusual name Chill weighs about 7 kilograms.
The watermelon with the colorful name Photon weighs about 4 kilograms.
The smallest watermelon is the Ogonyok watermelon, which weighs no more than 2 kilograms.
The largest watermelon in history is Carolina Cross 180, which weighs 120 kg. This watermelon was first introduced to the public's surprise by American farmer Bill Carson.

In Russia, the largest watermelon grown is the so-called Russian size watermelon, its weight reaches more than 61 kilograms. This watermelon is the largest in Europe.

Few people know, but watermelon is not only a melon crop, but also an herbaceous plant.

In this article we will look at how much a watermelon weighs, which specimens are found in nature, and which are grown by farmers.

Watermelon weight

Astrakhan watermelon weighs from 10 kilograms.
The so-called Crimson Sweet weighs around 5 kilograms, Crimson Glory can reach 15 kilograms in weight.
Madera weighs around 80 kilograms. The watermelon with the unusual name Chill weighs about 7 kilograms.
The watermelon with the bright name Photon weighs about 4 kilograms.
The smallest watermelon is the Ogonyok watermelon, which weighs no more than 2 kilograms.
The largest watermelon in history is Carolina Cross 180, which weighs 120 kg. This watermelon was first introduced to the public's surprise by American farmer Bill Carson.

In Russia, the largest watermelon grown is the so-called Russian size watermelon, its weight reaches more than 61 kilograms. This watermelon is the largest in Europe.