(1)
The radius and height of a cylindrical water reservoir is 2.8 m and 3.5 m
respectively. How much maximum water can the tank hold? A person needs
70 litre of water per day. For how many persons is the water sufficient for
a day?(pie =22/7)
Answers
Answer:
Volume of a cylinder = pie rsquare h
= 22/7 x r x r x h
= 22/7 x 2.8 x 2.8 x 3.5
= 86.24 meter cube
1 meter cube = 1000 litre
86.24 metre cube = 86240 litre
Persons = 86240/70
= 1232
For 1232 persons 86240 litres of water is sufficient.
Answer:
r = 2.8 m, h = 3.5 m, π = 22/7
Capacity of water reservoir = Volume of the cylindrical reservoir
= πr²h
= 22/2 × 2.8 × 2.8 × 3.5
= 86.24m³
= 86.24 × 1000
(°•° 1m³ = 1000 litre)
= 86240.0 litre.
•°• the reservoir can hold 86240 litre of water.
The daily requirement of water of a person is 70 litre.
•°• water in the tank is sufficient for 86240 / 70 = 1232persons.
Hope you understood mate!!!