The perimeter of the rectangle is 64cm, its width is 8cm. What is the area of the rectangle?
March 25, 2021 | education
| In order to find the area of a rectangle, we must find the length of the rectangle, since the formula for finding the area looks like this:
S = a * b, where a and b are the length and width of the rectangle.
From the condition, we know the perimeter of the rectangle – 64 cm, and its width is also known as 8 cm.
Let’s define x cm as the length and create the equation:
P = 2 (a + b);
2 (x + 8) = 64;
x + 8 = 64: 2;
x + 8 = 32;
x = 32 – 8;
x = 24.
We found the length of the rectangle.
We are looking for an area:
S = 8 * 24 = 192 cm2 area of a rectangle.
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