Question

50 coins of thickness 0.14 are of radius 1 cm are piled on another.find the volume of he cylinder this obtained.

Answer 1

Thickness of a coin = 0.14 cm

Thickness of 50 coin = 50*0.14= 7 cm

now,

the cylender forms,

height = 7 cm

radius = 1 cm

as we know,

$volume = \pi {r}^{2} h$

$volume = \frac{22}{7} \times {1}^{2} \times 7$

$volume = 22 \: {cm}^{3}$

Answer 2

Answer:

21.994

The question asks us to find the volume of cylinder made out of 50 coins. Each coin has a thickness (height) of 0.14 and radius of 1 cm. So if we can find out the volume of one coin, we can find out the answer by multiplying it with 50.

volume of one coin = 3.142 X (1)^2 X 0.14

Result is 0.43988 cm^3.

Therefore, volume of 50 coins = 0.43988 X 50

Results in 21.994 cm^3.