Answer:
Area shaded part = 116 to three sig digs.
Step-by-step explanation:
I don't know if your answer is correct or not, but the number of sig digs is not. The way the question has been posed is not to 3 sig digs either.
The answer should be 116 if they want it to three sig digs.
Let's see if the answer is correct
Area of the whole circle.
- Area of a circle = pi*r^2
- r = 6.5 cm Note: this is 2 sig digs.
- pi= 3.14
- Area = 3.14 * 6.5^2
- Area = 3.14 * 42.25
- Area= 132.665
Area of unshaded smaller circle
- pi = 3.14
- r = 2.3
- Area = 3.14 * 2.3^2
- Area = 3.14 * 5.29
- Area = 16.61
Area of the shaded part
- Area of shaded part = area of the whole circle - Area of smaller circle
- Area of the shaded part = 132.66 - 16.61
- Area of the shaded part = 116.01
- To 3 sig digs is 116
