Answer:
64
Step-by-step explanation:
Answer: 8cm
Step-by-step explanation:

Solve for h;



Answer:
4
Step-by-step explanation:
Hope this helps!! Have a good day!
The circumference follows the formula
C= 2 (pi)R
R is the radius which is half the diameter when we put this into the equation we get
C = 2 (pi)(4.5)
C=28.274334
Answers to 1, 2, and 3 are in the picture