Question

find the volume of cylinders.
Radius - 9cm , Height = 12 cm
volume of Cylinder = πr×r h​

Answer 1

Answer:

,

Step-by-step explanation:

Answer:

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Answer 2

Answer:

• The volume of the cylinder = 3054.85 (approx).

Given :

• Radius = 9 cm

• Height = 12 cm

To find :

• Volume of cylinder =?

Step-by-step explanation:

We know that,

Volume of cylinder = πr²h

Substituting the values in the above formula, we get,

= 22/7 × (9)² × 12

= 22/7 × 81 × 12

= 22/7 × 972

= 21384/7

= 3054.86.

Hence, The volume of the cylinder = 3054.85 (approx).

Brainly Extra Knowledge :

• The area of the circle of the cylinder is πr².

• The area of two circles will be 2πr².

• The radius ‘r’ of a cylinder is the radius of its base.

• Now, the area of the rectangle = length × breadth.

• 2πr is the circumference of the circle and h is the height.

• Area of the curved surface will be = 2πr × h = 2πrh

So the area of the cylinder will be: 2πr² + 2πrh, or

Total Surface Area of Cylinder = 2πr ( r + h )

Where r is the radius and h is the height of the cylinder (the distance between the two bases).