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What is the correct answer?

4

The breadth of a rectangular field is 60% of its length. If the perimeter of the field is 800 m,what is the area of the field?

A. 18750 sq.m

B. 37500 sq.m

C. 40000 sq.m

D. 48000 sq.m

Correct Answer :

B. 37500 sq.m


Let  length=x metres.Then breadth=60100xmetres=3x5mPerimeter=2x+3x5m=16x5m∴16x5=800x=800×516=250So,length=250 m,breadth=150m∴Area=250×150m2=37500m2
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