Question

NEED HELP ASAP.....Which formulas could you use to find the volume of a right circular cone? (A.) V=B*h where B=l*w (B.) V=3B*h where B=pi r^2 (C.) V=1/3B*h where B=l*w (D.) V= 1/3 B*h where B=pi r^2

Answer 1

A right circular cone has a circle as its base.
All answers that have B = l * w cannot be correct as that is the area of a rectangle, not a circle.
The area of a circle is A = pi  r^2, so you need B = pi r^2 in the formula.

The only formula that is correct is choice D. V = 1/3 Bh, where B = pi r^2