Question

If a right circular cone has base radius 6cm and slanted height 9cm ,then the volume of this cone is equal to?

Answer 1

Answer:

Hi buddy

Step-by-step explanation:

Volume of cone =31πr2h

Volume of lower part = volume of full cone - volume of upper cone

For full cone r=6,h=14cm

For upper cone r1=2r=26=3cm & h=7cm

Volume of lower part =31πr2h−31πr12h

=31π(r2h−r12h)

=31×722(62×14−32×7)

=31×722×7(36×2−9)=31×722×7(772−9)=4