Formula for volume of cone:
V = 
r = 6 km
h = 12 km
V = 
V = 
V = 
V = 452.389 km^3 <----------------------Using the calculators pi button
V = 452.16 km^3 <-------------------------Using 3.14 for pi
Hope this helped!
~Just a girl in love with Shawn Mendes
It is eight if u read the last part by the way says so that makes it 8
98 x 863 = ?
Answer is 84,574
Answer is A and C because they equal to 3(10-c)