Question

the inner diameter of a circular well is 4.2 m and it is 10m deep find

Answer 1

Answer:

(i) CSA is $132 m^{2}$

(ii) Cost of plastering is rupees 5280.

Step-by-step explanation:

(i) Depth of a well and its height is the same thing itself. If we're given radious, we could just directly do it but if we're given a diameter, we would've to convert it into radius, of course you would know that formula. Then, the rest can be carried out easily.

(ii) Since they said per sq.m, you could just directly multiply it so that you can get the cost for plastering.

Hope this helps you