How Do We Calculate the Volume of a Sphere, cones, and pyramids ?

Spheres : A sphere is a perfectly round geometrical and circular object in three-dimensional space, such as the shape of a round ball.

To Find the Volume of a Sphere you have to use the formula

Cones: A solid or hollow object that tapers from a circular or roughly circular base to a point.

 To Find the Volume of a Cone you use the formula 

V=Bh/3

B is the area of the base

for a cone the base is a circle so the formula can also be written as V=r^2h/3

Pyramids:  a square or triangular base and sloping sides that meet in a point at the top

 To find the Volume of a Pyramid you use the same formula that you would use for a cone 

V=Bh/3

B is the area of the bases

the  base of this pyramid is a rectangle so you use length * width so you can also write the formula as V=LWH/3