A circular path of 13 m radius has marginal walk 2 m wide all round it. Find the cost of leveling the walk at 25p per m2?
Options:
A) Rs.45 B) Rs.78 C) Rs.44 D) Rs.40 E) Rs.42
Explanation:   Ï€ (152 - 132) = 176   176 * 1/4 = Rs.44   ANSWER IS Rs.44
<result>C</result>
A circular path of 13 m radius has marginal walk 2 m wide all round it. Find the cost of leveling the walk at 25p per m2?