Question

The width of the triangle is 3/4 the length. The perimeter is 252cm. What is the width of the triangle.

A)36cm
B)48cm
C)54cm
D)72cm

Answer 1

C). 54 cm.

Explanation:

I think you mean a rectangle .

If the length is x then the width = 0.75x (because 3/4 = 0.75).

Perimeter = 2*length + 2*width.

252 = 2x + 2*0.75x

252 = 2x + 1.5x

252 = 3.5x

x = 252 / 3.5

= 72 which is the length,

The width = 3/4 * 72

= 54 cm.