Question

The total surface area of a cone whose radius is
and slant height 2l is
(a) 21(1+r)
(b) ter(1 + )
(c) r(1+r)
(d) 2trl
a
b
C
d​

Answer 1

Answer:

Using total surface area of cone= π r(l+r)

= π r(2l+r)