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aleksandr82 [10.1K]

4 years ago

13

A cone is placed inside a cylinder as shown. The radius of the cone is half the radius of the cylinder. The height of the cone i

s equal to the radius of the cylinder. What is the volume of the cone in terms of the radius, r?

1 answer:

wolverine [178]4 years ago

6 0

R = radius of cone
2r = radius of cylinder
Then height of cone is 2r.
Volume of Cone is Pi * r^2 * 2r = 2Pi*r^3

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Answer:

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Step-by-step explanation:

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3 years ago

3. Is XY Tangent to circle Z?<br> Y<br> 12 X<br> (20<br> Z<br> 18

Ratling [72]

Answer:

XY is a tangent

Step-by-step explanation:

Given

$XY = 12$

$WY = 20$

$WZ = 8$

Required

Is XY a tangent?

XY is a tangent if:

$WY^2 = XY^2 + WX^2$

Because XY should make a right angle at point X with the circle

Where

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This gives:

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<em>Yes, XY is a tangent</em>

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3 years ago

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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