Question

A rectangle is three times long as its breadth find its length lengths and breath if its perimeter is 128 cm

Answer 1

Answer:

Given

L= 3B

Perimeter= 128CM

2 ×( Length+Breadth) = Rectangle's Perimeter

or, 2× (L+B) = 120

or, 2× (3B+B) = 120 given Length is 3times breadth.

or, 8B= 120

or, B= 120÷8

or, Breadth = 15 cm.

if Breadth is 15cm then Length should be 3×15= 45 cm.

Length= 45cm & Breadth is 15 cm.