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Math

Answered

D. Solve the problem
The length of a rectangle is 7 cm longer than its width. If the perimeter of the rectangle is 142 cm, what are
the dimensions of the rectangle? Use the formula Area = Length x Width
Perimeter = 2Length + 2 width

Sagot :

ONEKPHIN ONEKPHIN

Answer:

39cm x 32cm

Step-by-step explanation:

Let w be the width

l be the length

If,

P=2l + 2w ----->Eq. 1

l= w+7 ------>Eq. 2

Substitute (2)--(1)

Then,

142=2(w+7)+2w SIMPLIFY

142=2w+14+2w

142-14=4w

4w=128

w=32

So,

l=39

The dimensions are 39cm x 32 cm

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