The dimensions of a prayer hall are 20m *15m*8m.Find the cost of painting its wall ate the rate of ruppees 15 per sq.m
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Answered by
23
Answer:
Step-by-step explanation:
let length and breadth be 20m and 15m respectively and height be 8m.
Area of walls = LSA of cuboid
= 2h(l+b)
2×8(20+15)
16×35
560 sq. m.
Cost of painting 1sq. m.wall= at rate of Rs.15
Therefore cost of painting sq. m.=560×15=8400Rs.
Answered by
5
Answer:
Rs 8400
Step-by-step explanation:
Area of 4 walls = 2(l + b)h
Given, l = 20m, b = 15m, h = 8 m
∴ Area of 4 walls = 2(20+15)8
= 560 m²
∴ Cost of painting = rate x area
= Rs 15 x 560
= Rs 8400
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