The length of the rectangle is 8 cm, what is the area if the perimeter is 28 cm?
| February 2, 2021 | education
1. Find the width of the rectangle by the formula a = (P – 2b) / 2, where a is the width of a rectangle with a perimeter P and a length b:
a = (28 – 2 * 8) / 2 = (28 – 16) / 2 = 12/2 = 6 cm.
2. Find the area of the rectangle by multiplying its length by width:
Area = 6 * 8 = 48 cm2.
Answer: the area of the rectangle is 48 cm2.
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