A circle with radius of 3 cm sits inside a circle with radius of 11 cm. What is the area of the shaded region? Round your final answer to the nearest hundredth.

You answer is 4.7

Explanation

I assume that the shaded region is the area inside of rectangle and outside the circle  

so

The shaded region is equal to the area of rectangle minus the area of circle

step 1

Find the area of rectangle

The area of rectangle is equal to multiply the length by the width

A= (3)-(11)=33 cm^2

tep 2

Find the area of the circle

The area of the circle is

A=\pi r^{2}

we have

r=3\ cm

\pi =3.14

substitute

A=(3.14)(3^{2})

A=28.26\ cm^{2}

step 3

Find the area of the shaded region

33-28.26=4.74\ cm^{2}

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step-by-step explanation: