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IRINA_888 [86]
3 years ago
9

The length of a rectangle is 10cm greater than it's width,the perimeter is 70cm.find the length nd width

Mathematics
1 answer:
LuckyWell [14K]3 years ago
5 0

Step-by-step explanation:   TS 5 15    8 36

L = W + 10  cm

Perimeter = 2(L + W)

Perimeter = 70  = 2(W +10 +W)

                70/2  = 2(W +10 +W) / 2

                   35  =  (W +10 +W)

                   35  =  2W +10  

            35 - 10  =  2W +10  - 10

                  25  = 2W

                  25/2  = 2W/2

                  25/2 cm = W         W = ??  cm

L = W + 10  cm

L = 25/2 + 10  cm                     L  = ??  cm

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