A solid is composed of a cylinder with a radius of 9" and height of 20" and a hemisphere, as shown. Find the volume of this solid. Group of answer choices

2106

2592

2430

1290

A solid is composed of a cylinder with a radius of 9 and height of 20 and a hemisphere, as shown.

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Ответ:

saharB

04.01.2020

Mathematics

Step-by-step explanation:

The vertex is halfway between focus and directrix, at (0,0).

The equation has the form y = ax².

Focal length p = distance between focus and vertex = 1

p = 1/|4a|

1 = 1/|4a|

|a| = ¼

The focus lies below the vertex, so the parabola opens downwards and a<0.

y = -¼x²

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A solid is composed of a cylinder with a radius of 9" and height of 20" and a hemisphere, as shown. Find the volume of this solid. Group of answer choices2106259224301290