Respuesta :

Answer:

[tex]113.04\:cm^2[/tex]

Step-by-step explanation:

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

  • [tex]=\pi (10)^2 - \pi (8)^2[/tex]

  • [tex]=\pi[ (10)^2 - (8)^2][/tex]

  • [tex]=3.14[ 100- 64][/tex]

  • [tex]=3.14[36][/tex]

  • [tex]=113.04\:cm^2[/tex]
az0714

Answer:

113.04 [tex]cm^2[/tex]

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 [tex]\pi r^{2}[/tex], where r is the radius.

1. To find the area of the large circle:

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

2. To find the area of the small circle:

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

3. Subtract smaller area from larger area:

  • [tex]314 - 200.96[/tex]
  • In the end, we get 113.04 [tex]cm^2[/tex]