Question

The perimeter of a rectangle is determined to be 5 times its width. Its semiperimeter (half of the perimeter) is calculated to be 10 inches. What is the area of the rectangle?

Answer 1

perimeter=20 (semi is given 10)
2(l+b)=20 (l is the length and b is the breadth or width)
also perimeter=5b
20=5b
b=4
2(l+b)=20
l+b=10
l=10-b
l=10-4
l=6
b=4

Answer 2

Perimeter = 20 inches
5b=20
b=4
2(l+b)=20
l+b=10
l+4=10
l=6
Area = 6*4=24in^2

Answer 3

sorry area=l*b
area=6*4=24