a swimming pool is 30 metre in length and 25 cm in breadth and depth is 4 find the cost of cementing it's floor and wall at rupees 50 per metre square
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Step-by-step explanation:
Length =30 m
Breadth =25 cm ( 0.25 m)
Height =4 m
(4 WALLS) + (RECTANGLE)
Total surface = L.S.A. + FLOOR AREA
= 2 h ( l+ b) + (l × b)
=2× 4( 30 +0.25)+ ( 30×0.25)
= 2× (120 + 1) + 7.5
= 2 × 121 + 7.5
= 242 + 7.5
= 249.5 m square
Cost of 1 metre square = Rs .50
Cost 0f 249.5 m sq =Rs 50× 249.5
= Rs 12475
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