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arsen [322]
3 years ago
9

The perimeter of a rectangle is 30 cm the length is 9 cm long longer than the width what are the length and width of the rectang

le
Mathematics
1 answer:
adell [148]3 years ago
8 0

Step-by-step explanation:

perimeter = 2(length) + 2(width)

let x represent the width of the rectangle

30 = 2x + 2(x + 9)

30 = 4x + 18

12 = 4x

x = 3

therefore width = 3 cm

length = 3+9

= 12cm

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