Question

Find the cost of painting the outside surface of solid cylinder of diameter 7m and height 25m at Rs 8 per square meter​

Answer 1

1100 sq cm is curved surface area , total cost to paint is 8800 rs , hope it will be helpful

Answer 2

Lateral surface area:
$2\pi \times r \times h$
2×(22/7)×3.5×25=550 m square
cost =550×8=Rs 4400