Question

find the area of a rectangle whose perimeter is 47 M and length is 15 m

Answer 1

perimeter of rectangle = 2(l + b)
47 = 2( 15 + b)
47 = 30 + 2b
2b = 47 -30
b = 17/2 = 8.5 m

area of rectangle = l x b
= 15 x 8.5
= 127.5 m²