Question

Find the length of a rectangle,if it is three times its breadth and its perimeter is 40

Answer 1

Answer:

let breath = x

length= 3x

perimeter = 2 x (Length +breath )

40 = 2 ( 3x + x )

40 = 2( 4x)

40 = 8x

x = 40/8 = 5

so Length = 3x = 3 x 5 = 15

breath = 5