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Question

Construct a rectangle has a width of 12 cm, and a height of 5 cm, what is its Perimeter?

A
30 cm
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B
32 cm
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C
42 cm
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D
None of these
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Solution

The correct option is C None of these
Draw a line segment AB=12cm
Construct an angle of 90 at points A and B.
Cut off AD=5cm and BC=5cm.
Join CD.
Thus, ABCD is a required rectangle.
Let a=12cm and b=5cm
Perimeter of rectangle ABCD=2(a+b)=2(12+5)=34cm

824416_585150_ans_2b38e2ac22ac4c3d8bc4e01622082bbf.png

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