The answer is D.
Explanation- 28/7=4
19-4 =15
98 - x² = 0
x² = 98
x = ±√98
Lets factor 98
98 | 2
49 | 7
7 | 7
1
So, 98 = 2 . 7 . 7 = 2 . 7²
x = ±√2.7²
x = ±7√2
I'm not real sure if this is right but I did my best
Answer:
Step-by-step explanation:
Answer:
h= 24
Step-by-step explanation:



r= 7
1230.88=3.14×7^2×h/3
1230.88= 153.86h/3
h=1230.88/153.86
h= 24