Question

The rainwater from a 22 m x 20 m roof drains into a cylindrical vessel of diameter 2 m and height 3.5 m. If the rain water collected from the roof fills 4/5 thof the cylindrical vessel, then find the rainfall in cm.

Answer 1

volume of roof =4/5volume of cylindrical vessel
22×20×h=4/5×(22/7)×1×1×7/2
h=1/50 (cm)
h=2cm

Answer 2

Answer:

Step-by-step explanation:

Given : The rainwater from a roof 22m*20m drains into a cylindrical vessel having diameter of base 2 m and height 3.5m .

To find : if the vessel is just full, the rainfall in cm?

Solution :

Diameter = 2 m

Radius = 1 m

Volume of rain water on the roof = Volume of tank

1m=100 cm

0.024 m=2.49 cm

Approximately the height of the rainfall is 2.5 cm.