Mathematics

Calculate the total surface area of a cone of height 12cm and base radius 5cm….

Calculate the total surface area of a cone of height 12cm and base radius 5cm. [Take π = 22/7]
  • A.
    180 5/7cm2
  • B.
    240 2/7cm2
  • C.
    235 5/7cm2
  • D.
    282 6/7cm2
  • E.
    361 3/7cm2
Correct Answer: Option D
Explanation

πrl + πr2 = πr(l + r)22/7 x 5(13 + 5)
282 6/7cm2