Question

please solve this ...

Answer 1

hey mate here is ur answer

given

raddii of frustum of cone = 7 and 3

height = 3

solution
$lsa = \pi(r1 + r2) \sqrt{ {(r1 - r2)}^{2} + {h}^{2} } \\ = \pi(7 + 3) \sqrt{ {(7 - 3)}^{2} + {3}^{2} } \\ = \pi(10) \sqrt{ {(4)}^{2} + 9 } \\ = \pi(10) \sqrt{16 + 9} \\ = 50\pi$
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