Question

a rectangle has an area equal to that of a square of side 40 cm . if the breath of the rectangle is 20 cm, find its length .are the perimeter of the rectangle and the square equal?

Answer 1

area of rectangle = area of square
l*b=(side) ²
l*20=(40)²
l=(40*40)/20
l=80
length of rectangle =80 cm

perimeter of square =4(side)=4(40)=160cm
perimeter of rectangle =2(l+b)=2(20+80)=2(100)=200cm
so, perimeter of rectangle ≠ perimeter of square

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