The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find

1.	The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find : (i) inner curved surface area. (ii) the cost of plastering this curved surface at the rate of Rs. 40 per m2.
Answer» The inner diameter of a circular well is $3.5 m .$ It is $10 m$ deep. Find : $(i)$ inner curved surface area. $(i i)$ the cost of plastering this curved surface at the rate of $R s . 40$ per $m^{2}$ .

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find : (i) inner curved surface area. (ii) the cost of plastering this curved surface at the rate of Rs. 40 per m2.

Answer»

The inner diameter of a circular well is $3.5 m .$ It is $10 m$ deep. Find :

$(i)$ inner curved surface area.

$(i i)$ the cost of plastering this curved surface at the rate of $R s . 40$ per $m^{2}$ .