-
Class 8: Mensuration
A cylindrical water tank has a diameter of 1.4 meters and a height of 2 meters.
Find its capacity in liters (take π as 22/7).
-
1 Reply
-
Diameter of a cylindrical water tank is 1.4m , and radius of a cylinder is half of its diameter .
Therefore, radius of cylindrical water tank = 1.4/2 = 0.7m .
Height of the cylindrical water tank is 2m.
Capacity of the cylindrical water tank can be calculated by the formula :
( π r^2h )
Where, r is the radius of cylindrical water tank and h is the height of the cylindrical water tank .
• r^2 = 0.7 * 0.7 = 0.49m^2
• Capacity of cylindrical water tank=
π *( r^2 )*h
= (22/7)*(0.49)(2)
= (22)(0.07)(2)
=(44)(0.07)
= 3.08m^3
• 1m^3 = 1000litre
To convert metre cube into litre , we have to multiply it by 1000 .
Therefore, capacity of cylindrical water tank is 3080litres.
Log in to reply.