Math, asked by akshatporwal03, 7 months ago

The radius of the base cylinder is 21 cm and its height is 4cm find its volume

Answers

Answered by Anonymous
2

Answer:

Given :-

  • Radius = 21 cm
  • Height = 4 cm

To Find :-

Volume

Solution :-

As we know that

 \star \large \bf \: Volume = \pi  {r}^{2} h

 \sf  :  \implies \: Volume =  \dfrac{22}{7}  \times  {21}^{2}  \times 4

 \sf \ratio \implies \: Volume \:  =  \dfrac{22}{7}  \times 21 \times 21 \times 4

 \sf \ratio \implies \: Volume \:  = 22 \times 3 \times 21 \times 4

 \sf \ratio \implies \: Volume \:  = 66 \times 84

 \sf \pink{\ratio \implies \:Volume \:  = 5544 \:  {cm}^{2}}

Know More:-

Volume of cylinder = πr²h

T.S.A of cylinder = 2πrh + 2πr²

Volume of cone = ⅓ πr²h

C.S.A of cone = πrl

T.S.A of cone = πrl + πr²

Volume of cuboid = l × b × h

C.S.A of cuboid = 2(l + b)h

T.S.A of cuboid = 2(lb + bh + lh)

C.S.A of cube = 4a²

T.S.A of cube = 6a²

Volume of cube = a³

Volume of sphere = (4/3)πr³

Surface area of sphere = 4πr²

Volume of hemisphere = ⅔ πr³

C.S.A of hemisphere = 2πr²

T.S.A of hemisphere = 3πr²

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