Answer:
18 inches
Step-by-step explanation:
formula is V = π* r^2* h/3.
h = 21. 21/3 = 7.
7*3.14 = 21.98.
1,780.38/21.98 = 81.
√81 = 9.
r = 9
d = 2r
9*2 = 18 inches.
To find the number you must make the inequality x+10>50 so we can solve and get x>40
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