Calculate the total surface area of a cone of height 12cm and base radius 5cm. [Take π = 22/7]
- A.
180 5/7cm^{2} - B.
240 2/7cm^{2} - C.
235 5/7cm^{2} - D.
282 6/7cm^{2} - E.
361 3/7cm^{2}
Correct Answer: Option D
Explanation
πrl + πr^{2} = πr(l + r)^{22}/_{7} x 5(13 + 5)
282 6/7cm^{2}