Height of a cylindrical drum is 56 cm. Find the radius of the drum if

1.	Height of a cylindrical drum is 56 cm. Find the radius of the drum if the capacity of that drum is 70.4 litre.(π = 22/7)
Answer» SOLUTION :- Height of the cylindrical drum = 56 cm Capacity of the cylindrical drum = 70.4 litres We know that, 1 LITRE = 1000 cu cm So, volume of the cylindrical drum = 70.41000 = 70400 cu cm Volume of cylindrical drum = πr²h ⇒ 70400 = 22/7r²56 ⇒ r² = (704007)/(22*56) ⇒ r² = 492800/1232 ⇒ r² = 400 ⇒ r = √400 ⇒ r = 20 cm So, radius of the cylindrical drum is 20 cm Answer.

Height of a cylindrical drum is 56 cm. Find the radius of the drum if the capacity of that drum is 70.4 litre.(π = 22/7)

Answer»

SOLUTION :-

Height of the cylindrical drum = 56 cm

Capacity of the cylindrical drum = 70.4 litres

We know that,

1 LITRE = 1000 cu cm

So, volume of the cylindrical drum = 70.4*1000 = 70400 cu cm

Volume of cylindrical drum = πr²h

⇒ 70400 = 22/7*r²*56

⇒ r² = (70400*7)/(22*56)

⇒ r² = 492800/1232

⇒ r² = 400

⇒ r = √400

⇒ r = 20 cm

So, radius of the cylindrical drum is 20 cm

Answer.

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Height of a cylindrical drum is 56 cm. Find the radius of the drum if the capacity of that drum is 70.4 litre.(π = 22/7)

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