Question

the dimension of a prayer hall are 20 m × 15m ×8 M .find the cost of painting its wall at rupees 10 per metre square

Answer 1

Answer:

rs 24000

Step-by-step explanation:

20 *15*8=300*8=2400

cost of painting =2400*10

=rs 24000

Answer 2

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