Will give brainliest answer and !

the diameter of the larger circle is 10.5 cm. the diameter of the smaller circle is 4.5 cm.

what is the best approximation for the area of the shaded region?

use 3.14 to approximate pi.

70.7 cm²

86.5 cm²

102.4 cm²

282.6 cm²

Use the diameter to find the area of the smaller circle and the area of the larger circle

Small circle: Area = 15.9

Large circle: Area = 86.6

86.6 - 15.9 = 70.7

The answer is a, or 70.7 cm^2.

Remember: Area of a circle is A = πr²

First, we'll find the area of the larger circle. Using the formula for the area of a circle, we would need to divide the diameter, 10.5 in half to get the radius.
→10.5 ÷ 2 = 5.25
Next, we need to square that number.
→5.25² = 27.5625 (Yes, the number is quite long)
Then, we'll need to multiply that number to π, or 3.14.
→27.5625 × 3.14 = 86.54625 (Phew)
This is the area for your large circle.

Repeating the steps from the larger circle, let's find the smaller circle.
1. 4.5 ÷ 2 = 2.25
2. 2.25² = 5.0625
3. 5.0625 × 3.14 = 15. 89625

Finally, subtract the two numbers together:
→ 86.54625 - 15.89625 = 70.65
Let's round To 70.7
Your final answer is 70.7 cm²
I hope this helps!