Mensuration
233
A rectangular grassy lawn measuring 38 m by 25 m has been surrounded externally by a
2.5-m-wide path. Calculate the cost of Gravelling the path at the rate of 120 per
m.
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3
Answer:Area of grassy lawn = 38×25m
2
=950m
2
The rectangle formed by the gravelled path plus grassy lawn has the size (38+2×2.5)×(25+2×2.5)m.
The area of this rectangle = 1290m
2
Area of gravelled path = 340m
2
Cost = 340×120Rs=Rs40,800
Step-by-step explanation:
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