The formula of an area of a circle with radius r:

Part A.
We have diameter of the circle d = 8 in. The diameter of a circle is equal two times length of a radius.
Therefore:

Calculate the area:

Answer: C. 16π square inches.
Part 2.
Look at the picture.
Total area:

Answer: C. 36π square inches
Answer:
7oz of water
Step-by-step explanation:
6(1/2)= 3; 6(2/3)= 4; 3+4=7
Answer:
2.4 feet long
Step-by-step explanation:
12/5, 12 feet long divided by 5 feet
The answer is 0.51111111111111111 (It goes on for infinity).
(3x+1)+(2x+4)=90
3x+1+2x+4=90
5x+5=90
5x=85
x=17