3 years ago

Find the surface area of the figure

Mathematics

1 answer:

tangare [24]3 years ago

7 0

Answer: First Option

$A = 790.90 cm^2$

Step-by-step explanation:

The surface area of a circular cone is equal to the area of the cone surface plus the area of the circular base

$A = \pi r ^ 2 + \pi rs$

Where r is the radius of the base and s is the inclined height of the pyramid.

In this case we know that:

$r = \frac{19}{2}$

$s = 17$

Then the surface area of the cone is:

$A = \pi (9.5) ^ 2 + \pi (9.5)(17)$

$A = 790.90 cm^2$

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