Question

if a right circular cone has radius 4cm and slant height 5cm then what is its volume ​

Answer 1

Step-by-step explanation:

volume of cone = (1÷3×22÷7×4×4×5)

after solving....

83.80cm3 answer

Answer 2

Given:-

• Radius of the circular cone = 4cm.
• Stant height of the circular cone = 5cm.

To find:-

• Find the volume of cone.?

Solutions:-

• Let the height of the cone be 'h' cm.

By using Pythagoras theorem,

=> l² = r² + h²

=> (5)² = (4)² + h²

=> 25 = 16 + h²

=> 25 - 16 = h²

=> 9 = h²

=> √9 = h

=> 3 = h

=> h = 3cm

• Height = 3cm

So,

• Volume of cone = 1/3 πr²h

=> 1/3 × 22/7 × (4)² × 3

=> 22/7 × 16

=> 352/7

=> 50.28cm³

Hence, the volume of the cone is 50.28cm.

More Important:-

Right circular cone:-

• h = height of cone
• r = Radius of cone
• s = slant height

• Volume = 1/3πr²h
• Lateral surface area = πr √r²+h²
• Total surface area = πr² + πr √r²+h²