Question

the inner diameter of a circular well is 3.5 metre.It is 10 metre deep find
i. Its inner curved surface area
ii. The cost of plastering discovered surface at the rate of rupees 40 per metre square​

Answer 1

Answer:

here

the inner diameter of a circular well is 3.5m.

radius= 3.5/2

height= 10m

(I) It's inner curved surface area=

= 2πrh

= 2*22/7*3.5/2*10

= 22/7 * 3.5 * 10

= 22/7 * 35

= 22* 5

= 110m²

so the curved surface area = 110m²

(ii) per m² = rs.40

so,

for its total area = 110 * 40 rs.

rs. 4400

so, The cost of plastering = rs 4400

hey don't forget to mark brainliest answer

Answer 2

Answer:

➲ ohhhhhhhhhh really???