Answer:
Part 1= Pi * R Squared
Part 2: 50.27
Part 3: 78.54
Part 4: 28.27
Step-by-step explanation:
Part 1: Memorize the formula
Part 2: 8 feet diameter = Pi * 4 squared. 8 feet is the diameter so the radius is 4. 4 squared is 16. 16 * pi = approximately 50.27, but is 50.24 if 3.14 is used as pi.
Part 3: Pi * 5 squared since 10 is diameter. 25 * pi which is close to 78.54, but is 78.5 is 3.14 is used for pi.
Part 4: I subtracted Part 3 from Part 2.
50 30 45 that is your answer for this
Since there are 36 inches in a yard, multiply 16 by 18 and divide that answer by 36
18*16=288
288/36=8
He needs 8 yards of tubing
I believe it’s option #3. hopefully that helps :)
X=-60
So b. I hope this helps