Question

in a cylindrical container, the base radius is 8 cm. If the height of the water level is 20 cm find the
Volume of the water in the container. (Use TT =3.14)
​

Answer 1

radius = 8cm

height = 20cm

volume of cylinder=

π x r^2 x h

3.14 × (8)^2 × 20

4022.85

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Answer 2

$\large{\underline{\underline{\textsf{\maltese\: {\red{Given :-}}}}}}$

☞ Radius (r) = 8cm

☞ Height (h) = 20cm

$\large{\underline{\underline{\textsf{\maltese\: {\red{To Find :-}}}}}}$

☞ Volume (v) of the water in the container = ?

$\large{\underline{\underline{\textsf{\maltese\: {\red{Solution :-}}}}}}$

Volume of cylinder = πr²h

✿ Putting the values.

Volume of cylinder = πr²h

⇒ Volume of cylinder = 3.14 × 8 × 8 × 20

⇒ Volume of cylinder = 4,019.2cm³

✿ Now we change the unit.

1000cm³ = 1L

⇒ 1cm³ = $\dfrac{1}{1000}$ L

⇒ 4,019.2 cm³ = $\dfrac{1}{1000}$ × 4,019.2 L

⇒ 4,019.2cm³ = 4.019.2 L

Therefore, the volume of the water in the container is 4.0192 litres.