Chapter 12, Problem 27SGR

To determine

To find the surface area of the given sphere.

Answer to Problem 27SGR

1018 square meters

Explanation of Solution

Given:

  

A sphere:

Radius, $(r)=9$ meters

Formula used:

Surface area of a sphere $=4\pi r^2$ , where $r$ is the radius of the sphere.

Calculation:

Let $S$ be the surface area of the given sphere.

Now, surface area of sphere is given by

  $S=4\pi r^2$

Putting the value of $r$ ,

  $\Rightarrow 4\times 3.14\times {(9)}^2$

  $\Rightarrow 4\times 3.14\times 9\times 9$

  $\Rightarrow 1018$ square meters

Conclusion:

Hence, the surface area of the given sphere is 1018 square meters.