Question

Клумба має форму прямокутника,периметр якого 42 м,а довжина-12 м.На кожному квадратному метрі клумби висадили по 12 кущиків хризантем.Скільки всього кущиків хризантем висадили на цій клумбі??

Answer 1

42÷2-12=9 м ширина клумбы
12×9=108 м^2 площадь клумбы
108×12=1296 кустиков хризантем высадили на клумбе

Answer 2

Problem Analysis

We are given that the shape of the flower bed is a rectangle with a perimeter of 42 m and a length of 12 m. We also know that there are 12 chrysanthemum bushes planted per square meter. We need to determine the total number of chrysanthemum bushes planted in the flower bed.

Solution

To find the total number of chrysanthemum bushes planted in the flower bed, we need to calculate the area of the flower bed and then multiply it by the number of bushes planted per square meter.

The perimeter of a rectangle is given by the formula: perimeter = 2 * (length + width).

Since we know the perimeter is 42 m and the length is 12 m, we can substitute these values into the formula to find the width of the flower bed.

Let's calculate the width of the flower bed:

42 = 2 * (12 + width)

Simplifying the equation:

42 = 24 + 2 * width

42 - 24 = 2 * width

18 = 2 * width

width = 18 / 2 = 9 m

Now that we know the length and width of the flower bed, we can calculate its area using the formula: area = length * width.

Let's calculate the area of the flower bed:

area = 12 * 9 = 108 square meters

Finally, we can find the total number of chrysanthemum bushes planted by multiplying the area of the flower bed by the number of bushes planted per square meter:

total number of bushes = area * number of bushes per square meter = 108 * 12 = 1296 bushes

Therefore, a total of 1296 bushes of chrysanthemums were planted in the flower bed.

Answer

A total of 1296 bushes of chrysanthemums were planted on this flower bed.