Question

A wall 10m long, 20cm thick and 1.2 m high has been constructed as a partition between two plots of land.Find the cost of cementing it on five sides at the rate of Rs.25 per sq. m.

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Answer 1

Answer:

$hello$

In the given Cuboidal Wall ;

l = 10m

b = 1.2 m

h = 20 cm = 0.2 m

Area to be cemented

= Total surface area - area of bottom side

= 2(lb+bh+hl) - hl

= 2(10×1.2 + 1.2×0.2 + 0.2×10) - (0.2×10)

= 2(12+0.24+2) - 2

= 2(14.24) - 2

= 26.48 m sq.

Cost of painting

= Area×Rate

= 26.48 × 25

= 662 Rs

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Answer 2

hope it helps!

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