Question

.   In a building there are 24 cylindrical pillars with each having a radius 28 cm and height 4 m. Find the cost of painting the curved surface area of all pillars at the rate of Rs. 8 per meter square.

SOLVE IN NOTE BOOK PLEASE

Answer 1

Answer:

Step-by-step explanation:

Pardon my bad handwriting

Answer 2

Yotal no. of pillars=24

radius. " " =28cm

height. " " =4m=4*100cm=400cm

Curved surface area of one pillar= 2πrh=2*22/7*28*400=70400cm²

curved surface area of 24 pillars=70400*24=1689600