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3 years ago

9

Factor the expression. 3x + 21

2 answers:

julsineya [31]3 years ago

7 0

Step-by-step explanation:

3(x +7)

x=7

( 3x+12 )= 3

HOPE THIS HELPS:)

Delicious77 [7]3 years ago

5 0

Answer: 3 ( x + 7 )

Step-by-step explanation:

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Answer:

Part 1) $324\pi\ units^{2}$ ------> $7,776\pi\ units^{3}$

Part 2) $36\pi\ units^{2}$ ------> $288\pi\ units^{3}$

Part 3) $81\pi\ units^{2}$ ------> $972\pi\ units^{3}$

Part 4) $144\pi\ units^{2}$ ------> $2,304\pi\ units^{3}$

Step-by-step explanation:

we know that

The largest cross sectional area of that sphere is equal to the area of a circle with the same radius of the sphere

Part 1) we have

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The area of the circle is equal to

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so

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For $r=18\ units$

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Part 2) we have

$A=36\pi\ units^{2}$

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For $r=6\ units$

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The area of the circle is equal to

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For $r=12\ units$

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$V=\frac{4}{3}\pi (12)^{3}$

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