Question

if the volume of right Circular Cone height 9cm is 48 pi cm3 find diameter of base .
Class = 9 . 13 chapter please fast answer.​

Answer 1

r =4

so diameter = 8

formula for finding volume of cone is 1/3hπr²

so by putting values in it we came to the conclusion

Answer 2

Correct Question :-

• If the volume of right Circular Cone is 48πcm³ and its height is 9cm, find the diameter of the base.

Given :-

• Shape = Cone
• Volume of Cone = 48πcm³
• Height of the Cone = 9cm

To Find :-

• Diameter of the base.

Solution :-

➞ Volume of Cone = ⅓ πr²h

➞ 48π = ⅓ πr² × 9

➞ 48 = ⅓ r² × 9

➞ 48 × 3 = r² × 9

➞ 144 = r² × 9

➞ 144 ÷ 9 = r²

➞ 16 = r²

➞ √16 = r

➞ 4cm = Radius

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➞ Diameter = 2 × Radius

➞ Diameter = 2 × 4

➞ Diameter = 8cm

Therefore, Diameter of the Base is 8cm

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Formulas Related to Cone :

• Volume of cone = ⅓ πr²h
• C.S.A of cone = πrl
• T.S.A of cone = πrl + πr²

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