Question

7. When 3 litres of oil is removed from an upright cylindrical
can, the level falls by 10 cm. Find the radius of the can.​

Answer 1

Answer:

9.77cm

Step by step explanation:

Let the radius of the can be r cm.

Removed oil had the shape of an upright circular cylinder. It's height is h cm. It's volume V = 3000cm².

The relational between them is:

V = π* R² * h²

so,

r =  √(V/π*h) = √(3000/3.14*10) = 9.77cm