1 Answer

Mohammad Zare · Answer 1 · 2020-04-23T02:52:51+0000

Answer:

467.99 units²

Explanation:

The formula for finding the surface area of a cone is:

$A=\pi r(r+\sqrt{h^(2)+r^(2)})$

Our values are:

r = 8

h = 7

π = 3.14

Let's plug the values into the formula

$A=\pi 8(8+\sqrt{7^(2)+8^(2)})$

$A=\pi 8(8+√(49+64))$

$A=\pi 8(8+√(113))$

$A=\pi 8(8+10.63)$

$A=\pi 8(18.63)$

A= (3.14)(8)(18.63)

A= (25.12)(18.63)

A= 467.99 units²

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