prove the following

Circumference of the cone and that of the cylinder, means C = 2πR.

Volume of the solid = Volume of cone + Volume of cylinder

V = πR²h/3 + πR²(h/3)

Multiply both sides by 4π.

4πV = 4π²R²h/3 + 4π²R²(h/3)

4πV = (2πR)²h/3 + (2πR)²(h/3)

4πV = C²h/3 + C²(h/3)

4πV = C²(2h/3)

C² = 3x4xπV/(2xh)

= 3x4x22xV/(7x2xh)

= 3x4x4x22xV/(4x7x2xh)         .................Multiply and divide by 4

C = 4[3x22xV/(56xh)]

Regards,

Team,

TopperLearning.