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Question

A 5 m wide lawn is cultivated along the outside of a rectangular plot measuring 60 m ×30 m. The area of the lawn is _______.
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A
1000 m2
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B
2000 m2
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C
475 m2
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D
1500 m2
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Solution

The correct option is A 1000 m2
Length of inner rectangle =60m
Breadth of inner rectangle =30m

Thickness of lawn =5m

Length of outer rectangle =60+5+5=70m
Breadth of outer rectangle =30+5+5=40m

Area of lawn = Area of outer rectangle Area of inner rectangle
=70×4060×30
=28001800
=1000m2

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