Rain water from a rectangular 22 m × 20 m roof drains into a cylindrical vessel of diameter 2m and height 3.5 m. If the rain water collected from the roof fills 45 th of the cylindrical vessel then find the rainfall in cm
2 cm
Let the rainfall be h m
Volume of water collected in the cylindrical vessel = Volume of rain water drained from the roof
= 45π(1)2×(72) = 22×20×h
Hence h =150m
1m = 100 cm
Hence 150m = 10050 = 2 cm
Hence rainfall = 2cm