Question

Cylindrical flask of diameter 4cm and height 14cm is half full of water. volumer of water?

Answer 1

radius = 2/100 meter
effective height = 7/100 m

Volume = π × (2/100)² × 7/100 = 8.8 × 10^-5

Answer 2

The required volume is 88 $cm^{3}$.

Given:

Diameter=4 cm

Height=14 cm

To find:

The volume of water

Solution:

We know that the entire flask is only half full.

So, the height of the water in the flask will be half the height of the flask.

The height of the water, h=height of flask/2=14/2=7 cm

The radius, r=diameter/2=4/2=2 cm

The required volume of water=π×$r^{2}$×h

Using the values,

=22/7×2×2×7

=22×4

=88 $cm^{3}$

Therefore, the required volume is 88 $cm^{3}$.