Question

Find the TSA of a cone if its slant height is 21m and diameter of base is 14m.
$tsa \: of \: cone = \pi \times r(l + r)$
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Answer 1

Answer:

784 $m^{2}$

Step-by-step explanation:

It is given in the question that,

Slant height (L) =21m

diameter(d)=14m

R=D/2

R=14/2=7m

TSA of a cone =

=$\pi$×r(l+r)

=22/7 * 7(21 +7)

=22/7 *7*28

=28*28

=$28^{2}$

=784 $m^{2}$