Question

A cylinder pillar in 50 cm in diameter 3.5m height find the cost of painting the curved surface of the pillar at the rate of 12.50 per metre square​

Answer 1

Answer:

A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of र 12.50 per m2. = र 5.5 x 12.50 = र 68.75.

Answer 2

Answer:

radius = 50/2×100 = 0.25m

curved surface area of pillar = 2π r h

= 2×22/7 × 0.25 × 3.5

= 44× 0.5× 0.25

=. 22× 0.25

= 5.5 m²

now cost of painting

12.5 × 5.5

₹68.75

hope it helps

don't mark me as a brainlist am just trying to gain some knowledge nothing else