Question

The total surface area A of a cone is related to the radius r and the slant height l by the formula A= pie r (r+l) .
Find A when r=7 cm and l= 11 cm​

Answer 1

$\large{ \bold{ \underline{answer}}}$

18cm

$7cm \: to \: 11cm$

$7 + 11$

$= 18cm$

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