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Question

The length of a rectangle is 40 cm. If its breadth is half the length, the perimeter is

A
1200 cm
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B
1.2 cm
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C
120 m
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D
120 cm
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Solution

The correct option is D 120 cm
Given length l=40 cm
The breadth is half of the length.
b=l2
b=20 cm

Perimeter of the rectangle, P =2(l+b)
P=2(40+20)
P=2(60)
P=120 cm

Perimeter of the rectangle is 120 cm.

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