Answer :
V = 4/3 * pi * r^3
V = 4/3 * pi * 8.4^3
Simplify exponent:
V = 4/3 * pi * 592.704
Multiply:
V = 790.272pi
V = 4/3 * pi * 8.4^3
Simplify exponent:
V = 4/3 * pi * 592.704
Multiply:
V = 790.272pi