The dimensions of a prayer hall are 20m×15m×8m.Find the cost of painting its walls at Rs.10 per sq.m.
Answers
Hey Mate!!
Here is your answer!!
Curved Surface Area of Prayer Hall = 2*( L+B )H
= 2*( 20+15 )8
= 16*( 35 )8
= 16 * 300
= 4800 m^2
The cost of painting the walls of prayer hall is Rs.10 per sq.m.
So the cost of painting 4800 m^2 wall is Rs 48000 ( Answer )
@Rajasthani................
Answer:
Rs 5600
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 10 x 560
= Rs 5600