23. Mrs. Sawant has a rectangular grassy lawn measuring 30 m by 28 m.
She wants to construct a path to be surrounded externally of width 2
m. Find the cost of levelling the path at the rate of Rs 5 per square
metre.
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Answer:
1080 rupees
Step-by-step explanation:
area of the rectangular plot = l x b
where l - length
and b - breadth
= 30 x 28
= 840 sq.m
area of smaller rectangle - length - {2 + 2} x breadth - {2 + 2}
= 30 - 4 x 28 - 4
= 26 x 24
= 624 sq.m
area of path - 840 - 624
= 216 sq.m
cost of gravelling - 216 x 5
= 1080 rupees
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