Question

A rectangle has a perimeter of 84cm and a length of 35cm. What is the width.

Answer 1

Perimeter of a rectangle = length + length + width + width
= 2length + 2width
= 2(35) + 2width
= 70 + 2width
70 + 2width = 84
2width = 14
width = 14/2
= 7cm