Question

I need help with 7th grade math please need help ASAP + brainleist

Answer 1

Answer:

$113.04\:cm^2$

Step-by-step explanation:

• Area of the shaded region = Area of exterior circle - Area of interior circle

• $=\pi (10)^2 - \pi (8)^2$

• $=\pi[ (10)^2 - (8)^2]$

• $=3.14[ 100- 64]$

• $=3.14[36]$

• $=113.04\:cm^2$

Answer 2

Answer:

113.04 $cm^2$

Step-by-step explanation:

We start by noticing that the image is drawn with a circle within a circle.

We use this equation (area of larger circle) - (area of smaller circle) = area of the shaded region.

Note the formula to find the area of a circle is $\pi r^{2}$, where r is the radius.

1. To find the area of the large circle:

• Plug in 10 for the radius: $\pi 10^{2}$
• Replace $\pi$ as 3.14 $(3.14)(10^{2})$
• Compute: 314 $cm ^{2}$

2. To find the area of the small circle:

• Plug 8 for the radius: $\pi 8^{2}$
• Replace $\pi$ as 3.14 $(3.14)(8^{2})$
• Compute: 200.96 $cm^2$

3. Subtract smaller area from larger area:

• $314 - 200.96$
• In the end, we get 113.04 $cm^2$