Question

Боковые стороны ящика без крышки необходимо покрасить краской.Длина ящика равна 9дм,ширина 6дм,а высота 4дм.Найдите площадь поверхности,которую надо покрасить.Ответ должен быть 36дм в квадрате. Для приготовления ягодного варенья взяли2 части клубники,3 части малины,2 части смородины и 10 частей сахара.на сколько больше граммов сахара,чем ягод,если всего 3 кг 400г варенья?ответ должен быть 80 грамм.

Answer 1

площадь одной стороны ящика 9*4=36 дм2

площадь другой стороны ящика 4*6=24 дм2, если только у вас в условии про одну сторону спрашивают тогда 36 дм2, а так как написано "Боковые стороны ящика без крышки необходимо покрасить краской", то сторон у ящика по 2 и ответ должен быть

2*36+2*24=72+48=120 дм2 условие посмотрите

 

ягод=2+3+2=7 частей

10 частей сахара

всего варенье 7+10=17 частей

3400/17=200 гр 1 часть

200*7=1400 гр ягод

200*10=2000 гр сахара

2000-1400=600 гр.

На 600 граммов сахара, чем ягод было использовано при приготовлении варенья

Answer 2

Calculation of Surface Area of the Box

To find the surface area of the box without the lid, we need to calculate the area of each side and then sum them up.

Given: - Length of the box = 9 dm - Width of the box = 6 dm - Height of the box = 4 dm

To calculate the surface area, we need to find the area of each side of the box.

1. Top and bottom sides: - The top and bottom sides have the same dimensions as the length and width of the box. - Area of each top/bottom side = Length * Width = 9 dm * 6 dm = 54 dm²

2. Front and back sides: - The front and back sides have the same dimensions as the length and height of the box. - Area of each front/back side = Length * Height = 9 dm * 4 dm = 36 dm²

3. Left and right sides: - The left and right sides have the same dimensions as the width and height of the box. - Area of each left/right side = Width * Height = 6 dm * 4 dm = 24 dm²

Now, we can calculate the total surface area by summing up the areas of all sides:

Total surface area = 2 * (top/bottom area) + 2 * (front/back area) + 2 * (left/right area) = 2 * 54 dm² + 2 * 36 dm² + 2 * 24 dm² = 108 dm² + 72 dm² + 48 dm² = 228 dm²

Therefore, the surface area of the box that needs to be painted is 228 dm².

Note: The answer provided is different from the expected answer of 36 dm². Please double-check the given dimensions and calculations to ensure accuracy.

Calculation of Sugar Content in Jam

To find the difference in grams between the weight of sugar and the weight of berries in the jam, we need to calculate the weight of sugar and the weight of berries separately.

Given: - 2 parts strawberries - 3 parts raspberries - 2 parts blackcurrants - 10 parts sugar - Total weight of jam = 3 kg 400 g

To calculate the weight of sugar and berries, we need to determine the weight of one part and then multiply it by the respective number of parts.

1. Weight of sugar: - Total parts = 2 + 3 + 2 + 10 = 17 parts - Weight of one part = Total weight of jam / Total parts = 3400 g / 17 = 200 g - Weight of sugar = 10 parts * Weight of one part = 10 * 200 g = 2000 g

2. Weight of berries: - Weight of strawberries = 2 parts * Weight of one part = 2 * 200 g = 400 g - Weight of raspberries = 3 parts * Weight of one part = 3 * 200 g = 600 g - Weight of blackcurrants = 2 parts * Weight of one part = 2 * 200 g = 400 g - Total weight of berries = Weight of strawberries + Weight of raspberries + Weight of blackcurrants = 400 g + 600 g + 400 g = 1400 g

Now, we can find the difference between the weight of sugar and the weight of berries:

Difference = Weight of sugar - Weight of berries = 2000 g - 1400 g = 600 g

Therefore, the weight of sugar is 600 grams more than the weight of berries in the jam.

Note: The answer provided is different from the expected answer of 80 g. Please double-check the given proportions and calculations to ensure accuracy.