Practicing Success
A cone-shaped temple top has slant height of 10 m and radius of base is 11 m. Find the total cost for painting its curved surface area at the rate of ₹7/m2 [Use $π = \frac{22}{7}$] |
₹2,440 ₹2,040 ₹2,420 ₹2,240 |
₹2,420 |
We know that, Curved surface area = πrL We have, Slant height = 11 m Radius of base = 10 m, So, π × 10 × 11 = 110π So, the cost of painting, = 110π × 7 = 770 × \(\frac{22}{7}\) = Rs.2420 |