Question

Find the sum of the volume of a cone with radius 1 cm and height 5 cm and the volume of a sphere of radius 1 cm. [Take π = 3.]

Answer 1

volume of cone is
3 pi r^2 h
putting the above given values of r and h we get...
3x3x1x1x5=45 cm......
and volume of sphere. ..
4/3pi r^3
putting the value of r we get. ...
4/3 x3 x1x1x1=4 cm
now; add there volumes
(45+4)=49 cm
hope it Will help you

Answer 2

we know that volume of the cone = 1/ 3*π (r^2)*h.

Volume of the cone = 1/3* 3 * (1^2) *5 = 5 cm³

now the volume of a sphere = 4 / 3*π* (r)3]

Volume of the sphere = 4 / 3*3*(1^3) = 4 cm3

Sum of the volumes of cone and sphere = 5^+4 = 9 cm^3 we know that volume of the cone = 1/ 3*π (r^2)*h.

Volume of the cone = 1/3* 3 * (1^2) *5 = 5 cm³

now the volume of a sphere = 4 / 3*π* (r)3]

Volume of the sphere = 4 / 3*3*(1^3) = 4 cm3

Sum of the volumes of cone and sphere = 5^+4 = 9 cm^3  ANS