Question

The diameter of a right circular cylinder is 21cm and its height is 8cm .find the volume

Answer 1

Answer:

hey dude plz find the attachment.

hope it helps you.

Answer 2

Given :-

• Diameter of Cylinder = 21 cm .
• Height = 8cm.

To Find :-

• Volume = ?

Formula used :-

• Radius of Sphere = (Diameter /2)
• Volume of Cylinder = (π * r² * h )

Solution :-

Putting values we get :-

→ V = (22/7) * (21/2)² * 8

→ V = 22 * 3 * 21 * 8 /4

→ V = 66 * 42

→ V = 2772cm³.

Hence, Volume of right circular cylinder is 2772cm³.

_____________________________________

Note :-

→ Volume of Hollow Cylinder = πh(r1² – r2²).

→ Curved Surface Area of Cylinder = 2πrh .

→ Total Surface Area of Cylinder = 2πrh + 2πr².

____________________________