Question

A rectangle has a length of 15 cm and a perimeter of 72 cm.



Which equation could be used to find the width of the rectangle?



A.


2w + 15 = 72


B.


w + 15 = 72


C.


2w + 30 = 72


D.


15w = 72

Answer 1

The formula for the Perimeter of a rectangle is P = 2L + 2W.

Plug in what we know:

Perimeter = 72

Length = 15

P = 2L + 2W

72 = 2(15) + 2W

Answer 2

You can simplify it more:

72 = 2(15) + 2W

72 = 30 + 2W

Answer 3

Therefore, the answer is C.

Answer 4

yes, what @iGreen said. Here maybe this video can help a little bit:
https://www.khanacademy.org/math/geometry/basic-geometry/perimeter_area_tutorial/v/perimeter-and-area-basics

Answer 5

ty\

Answer 6

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Answer 7

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Answer 8

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Answer 9

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Answer 10

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Answer 11

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Answer 12

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Answer 13

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Answer 16

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Answer 17

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Answer 18

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Answer 19

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Answer 20

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Answer 21

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