A rectangle has perimeter 58 cm and length 21 cm. What is it's width?

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asked Sep 7, 2018 28.6k views

1 Answer

Ashley Alvarado · Answer 1 · 2018-09-13T17:12:57+0000

the formula for perimeter for rectangle is (width + length) x 2
so in her let y be the width,
(y + 21) x2 = 58
y + 21 = 29
y= 8
therefore the width is 8cm

A rectangle has perimeter 58 cm and length 21 cm. What is it's width?

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