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3 years ago

14

The height of a cylinder is three times the diameter of the base. The surface area of the cylinder is 126 PI squared feet. What

is the radius of the base?

1 answer:

lozanna [386]3 years ago

3 0

30

you have to do the math of 9x2=18 then you add 12 to your answer and your answer is 30

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In the circle below, chord AB passes through the center of circle 0. If the radius OC is perpendicular to chord AB and has lengt

Airida [17]

Answer:

Option (C)

Step-by-step explanation:

In the given circle, AB is a chord passing through the center O.

Therefore,chord AB is a diameter of the circle and OC is the radius.

AO = OB = OC

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By applying Pythagoras theorem in right ΔBOC,

BC² = OC² + OB²

BC = $\sqrt{OC^{2}+OB^{2}}$

= $\sqrt{7^2+7^2}$

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≈ 9.9 units

Therefore, Option (C) will be the answer.

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