Question

7. The length of a rectangle is one and half
times its breadth. If the perimeter of the
rectangle is 100 cm. find the length and the
breadth of the rectangle.
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Answer 1

l=(3/2)*b

b=?

=> perimeter=2*(l+b)

100=2(3/2b+b)

100=2(5b/2)

100=5b

b=100/5

b=20

l=3/2*20

l=3*10

l=30