1.

15 metre deep circular well is 4. 2 find the cost of plastering its inner curved surface area at the rate of 40 per metre square​

Answer»

Answer:

16200 RUPEES

Step-by-step EXPLANATION:

h=15m

r=4.2m

csa of CYLINDER =2pirh

2*3.14*4.2*15=405

405*40=16200



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