Math, asked by bhavya3486, 1 year ago

The dimensions of a prayer hall are 20m×15m×8m.Find the cost of painting its walls at Rs.10 per sq.m.

Answers

Answered by RAJASTHANIQUEEN
2

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................

                   




Answered by abhi569
1

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

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