To find the volume of the cylinder and the cone, we need to use the Volume formulas:
For the cylinder: V_cylinder = π * r^2 * h_cylinder
For the cone: V_cone = (1/3) * π * r^2 * h_cone
Given that the volume of the cylinder and the cone are the same, we can set up the equation:
π * 10^2 * 4 = (1/3) * π * r^2 * h
π * 100 * 4 = (1/3) * π * r^2 * h
400π = (1/3) * π * r^2 * h
1200 = r^2 * h
Now let's check each of the options given:
1. If radius of the cone = 5 and height of the cone = 12:
r = 5, h = 12
1200 = 5^2 * 12
1200 = 25 * 12
1200 = 300, which is not true
So, radius of the cone = 5 and height of the cone = 12 is not correct.
2. If radius of the cone = 15 and height of the cone = 4:
r = 15, h = 4
1200 = 15^2 * 4
1200 = 225 * 4
1200 = 900, which is not true
So, radius of the cone = 15 and height of the cone = 4 is not correct.
3. If radius of the cone = 15 and height of the cone = 12:
r = 15, h = 12
1200 = 15^2 * 12
1200 = 225 * 12
1200 = 2700, which is not true
So, radius of the cone = 15 and height of the cone = 12 is not correct.
4. If radius of the cone = 5 and height of the cone = 4:
r = 5, h = 4
1200 = 5^2 * 4
1200 = 25 * 4
1200 = 100, which is true
So, radius of the cone = 5 and height of the cone = 4 is correct.
Therefore, the radius of the cone = 5 and height of the cone = 4 could be the correct values.
h=4
r=10
If the cylinder and the cone shown have the same volume, then the radius
and height of the cone could be which of these?
radius of the cone = 5; height of the cone = 12
radius of the cone = 15; height of the cone = 4
radius of the cone = 15; height of the cone = 12
radius of the cone = 5; height of the cone = 4
1 answer