Question

We know that volume of cylinder is πr²h, cube is side³, cuboid is length × breadth × height. But what's the origin of all these volume related formulas??

Don't need answer as "volume is defined as area of base times height". I need a valid proof for finding volume of any 3 dimensional solid figure such as sphere, cuboid, cone etc...
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Answer 1

Answer:

Karamjyot

Step-by-step explanation:

volume of sphere is 4/3 ×22/7× radius × radius × radius

volume of cuboid is length × breadth × height

volume of cone is 1/3 × 22/7 × radius ^ × height