8RB Group D 23-Sep-2018 Shift 1 Solved Paper

Question : 55 of 100

Marks: +1, -0

A field measures

90 \ { m}

60 \ { m} .

There is a concrete path

3 \ { m}

wide all round its perimeter. Find the total area covered by the concrete path.

Solution:

Area of rectangle field = Length

\×

Width

90 \×60=5400 \ { m}^{2}

Area after concrete path

(90+3+3) \×(60+3+3)=96 \×66

=6336 \ { m}^{2}

Area covered by concrete path

=6336-5400=936 \ { m}^{2}

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