Question

the barrel of an ink pen cylindrical in shape is 7 cm long and 5 mm in diameter and child fills up in in this pen from a letter ink bottle how many times a little child will fill his ink pen if he has used the complete ink bottle​

Answer 1

Answer:

1000 times

Step-by-step explanation:

given height=7cm

diameter=5mm

              =0.5cm

radius=0.25cm

volume of cylinder=πr^2h

                               =π*(0.25)^2*7

                               =1.3744cm^3

we know that 1 litre=1000cm^3

therefore 1.3744cm^3=0.001374litres

thus we can fill it 1000 times.