Question

A petrol tank is in the form of a cylinder whose diameter is 3m and length is 7m . How many litres of petrol can be stored in the petrol tank ?

Answer 1

length of tank = 7 m
its diameter = 3 m
thus its radius = 3/2 m

vol of tank = vol of cylinder = # r^2 h
                                           = 22/ 7 * 3/2 * 3/2* 7
                                           = 11*9/2
                                           = 99/2 m^3

since 1 m^3 = 1000 litres, 
 vol of petrol tank = 99/2 * 1000 = 99*500 = 49500 litres of petrol.

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Answer 2

A petrol tank is in the form of a cylinder whose diameter is 3m and length is 7m. 49500 litres of petrol can be stored in the petrol tank.

Step-by-step explanation:

Diametre of the tank $= 3 m$

Radius of the tank $= \frac{D}{2}$$= \frac{3}{2} m$

Height of the tank $= 7 m$

To calculate the capacity of the tank we have to find the volume of the cylindrical tank.

Volume of the cylindrical tank $=$π$r^{2} h$

$= \frac{22}{7}$×$(\frac{3}{2} )^{2}$×$7$

$= \frac{22}{7}$×$\frac{3}{2}$×$\frac{3}{2}$×$7$

$= \frac{99}{2}$$= 49.5 m^3$

$1 m^3 = 1000 l$

$49.5 m^3 = 49.5$×$1000 = 49500 l$

Hence, 49500 litres of petrol can be stored in the petrol tank.

Related links

https://brainly.in/question/7336567

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