Question

Calculate the shaded area

Answer 1

116cm^2

Explanation:

This problem is just a matter of finding the area of the large and the small circle. To find the area of the large circle, you will use the equation: A = pi*r^2 in the following manner:

A = pi*r^2

A = pi*6.5^2

A = pi*42.3

A = 133

Next, you need to subtract the smaller circle from the area to only have the shaded area. Do this like the following:

A = pi*r^2

A = pi*2.3^2

A = pi*5.29

A = 16.6

Lastly, you just need to subtract! Do this like the following:

A = 133 - 16.6 = 116.4cm^2 = 116cm^2

Answer 2

The area of shaded area is 116.14 cm²

Explanation:

The area of circle is given by

A=πr²

Wee have 2 radii

Lets find for the radius 2.3

A = π * 2.3²

A = 16.61

Now lets find for the radius 6.5

A = π * 6.5²

A = 132.73

Now

The shaded area is 132.75 - 16.61

Shaded area = 116.14