Question

A rectangle has length double of its breadth.if the are is 72 cm,find its breadth,length and perimeter.

Answer 1

Answer:

let the breadth be x

then, length = 2x

area = 72 cm

l × b = 72

2x × x = 72

2x² = 72

x² = 72/2

x² = 36

x = √36

x = 6

So, breadth = 6cm

length = 2× 6 = 12cm

perimeter of rectangle = 2( l + b )

= 2 ( 12 + 6 )

= 2 × 18

= 36 cm