The length of the rectangle is 12 / 5cm, and the width is 2/3 of its length. Calculate the perimeter and area of the rectangle.
August 3, 2021 | education
| First of all, let’s determine the length of this rectangle:
1) 12/7 = 2.4 cm – is the length of the figure.
Next, let’s define the width. To do this, we calculate 2/3 of the length of the figure, that is, we find 2/3 of 2.4 cm:
2.4 cm / 3 parts * 2 parts = 0.8 cm * 2 = 1.6 cm – is the length of the rectangle.
Next, we calculate the perimeter by adding all four sides together:
P = 1.6 cm + 2.4 cm + 1.6 cm + 2.4 cm = 4 cm + 4 cm = 8 cm.
Let’s calculate the area by multiplying the length of the rectangle by its width:
S = 2.4 cm * 1.6 cm = 3.84 cm2.
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