Question

Find the surface area of each figure. round to the hundredths place

Answer 1

Given:

In the given cone,

Radius of the cone = 7.2 m

Slant height of the cone = 17 m

To find:

The surface area of the cone.

Solution:

The surface area of a cone is:

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

Where, r is the radius of the cone and l is the slant height of the cone.

Putting $\pi=3.14,\ r=7.2,\ l=17$ in the above formula, we get

$A=(3.14)(7.2)(17)+(3.14)(7.2)^2$

$A=384.336+162.7776$

$A=547.1136$

$A\approx 547.11$

Therefore, the surface area of the given cone is 547.11 square m.