Question

find the volume of come whose radius of base is 18 cm and height is 21 cm​

Answer 1

Given :

✰ Radius of cone (r) = 18cm

✰ Height of cone (h) = 21cm

To find :

✰ Volume of cone

Solution :

✰ In the question raduis and Height of the cone of cone is given. By using the formula of Volume of cone 1/3πr²h we can easily find the volume of the Cone.

Volume of cone = 1/3πr²h

→ 1/3 × 22/7 × (18)² × 21

→ 1/3 × 22 × 18 × 18 × 3

→ 22 × 18 × 18

→ 7128cm³

∴Volume of cone is 7128cm³

Answer 2

Given :

• Radius of Cone (r) = 18cm
• Height of Cone (h) = 21cm

To Find :

• Volume of Cone

Solution :

✰ As we know that, Volume of Cone is given by ⅓ πr²h . Now in this question Radius of cone along with the Height of cone is given. So simply we will put the given values in the formula to find the Volume of the Cone.

⠀

⠀⟼⠀⠀Volume = 1/3πr²h

⠀⟼⠀⠀Volume = 1/3 × 22/7 × (18)² × 21

⠀⟼⠀⠀Volume = 1/3 × 22 × (18)² × 3

⠀⟼⠀⠀Volume = 22 × (18)²

⠀⟼⠀⠀Volume = 22 × 18 × 18

⠀⟼⠀⠀Volume = 22 × 324

⠀⟼⠀⠀Volume = 7128cm³

⠀

Thus Volume of Cone is 7128cm³

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