The sides of rectangle are in ratio 8:7 its perimeter is 90 cm find its length
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Answered by
3
Answer:
The sides of rectangle are in ratio 8:7
its perimeter is 90 cm
length(l)/breadth(b)=8/7
l=8b/7→1
2(l+b)=90
2(8b/7+b)=90
2(8b+7b)/7=90
2/7(15b)=90
2/7×b=6
b=21cm
l=8b/7. (from 1)
l=8×21/7
l=24cm
Answered by
6
Answer:
length=8x
breadth=7x
A.T.Q
2(8x+7x)=90
2*15x=90
30x=90
x=90/30
x=3
length=8x3=24cm
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