Answer:
B)
Step-by-step explanation:
4x+9y=28
-4x-y=-28
8y=0
divide both side by 8
y=0
solve for X in equation 1
4(X)-9(0)=28
4x-0=28
4x =28
divide both side by 4
4x/4=28/4
X= 7
y=0,x=7
V≈628.32 units³
I used the formula:
V=πr2h/3 (h/3 as in a fraction)
Hope this helps!