A circular path of 20 m radius has marginal walk 2 m wide all round it. Find the cost of leveling the walk at 25p per m2?  Choose the correct choice from the following answers.
A) Rs.49	B) Rs.40	C) Rs.44	D) Rs.42	E) Rs.66
Rs.66xplanation:   π (22^2 - 20^2) = 22/7 *(484-400)= 
<gadget id="calculator">22/7 *(484-400)</gadget>
<output>264</output>
264   264 * 1/4= Rs.66   Answer: Option Rs.66
<result>E</result>
A circular path of 20 m radius has marginal walk 2 m wide all round it. Find the cost of leveling the walk at 25p per m2?