) The total surface area of a cone whose radius is r/2 and slant height 2l is
A. 2πr(l + r)
B. πr(l + (r/4))
C. πr(l + r)
D. 2πrl
Answer:B
) The total surface area of a cone whose radius is r/2 and slant height 2l is
A. 2πr(l + r) B. πr(l + (r/4)) C. πr(l + r) D. 2πrl
Explanation: The total surface area of cone = πr(l + r) square units.