Question

A rectangle has perimeter 56 cm and length 21 cm. What is its width?

Answer 1

width=7 cm

Explanation:

perimeter=2(lengths+width)

56 =2(21+x)

56 =42+2x

56-42 =2x

2x = 14

x =7

therefore the width=7 cm

Answer 2

answer the answer is 7.

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