133k views
2 votes
A cone’s height and its radius are each equal to half the radius of a sphere. How many of these cones would it take to equal the volume of the sphere? A)16 B)24 C)32 D)48

User Camus
by
7.4k points

2 Answers

2 votes

Answer:

C) 32

Explanation:


User Tobias Gubo
by
7.7k points
4 votes

Answer: 32

Explanation:

Given: A cone’s height and its radius are each equal to half the radius of a sphere.

Let x be the radius of the sphere, then the radius of cone =x/2

and height of the cone = x/2

The volume of sphere is given by :


V=(4)/(3)\pi r^3, where r is the radius of sphere.


\Rightarrow\ V=(4)/(3)x^3

The volume of cone is given by :


V=(1)/(3)\pi r^2\ h, where r is the radius and h is height of the cone .


\Rightarrow\ V=(1)/(3)\pi ((x)/(2))^2((x)/(2))\\\\\Rightarrow\ V=(1)/(24)x^3

The number of cones would it take to equal the volume of the sphere is given by :-


n=\frac{\text{Volume of sphere}}{\text{Volume of cone}}\\\\=((4)/(3)x^3)/((1)/(24)x^3)=32

User LeeMobile
by
8.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories