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4 years ago

8

Factor. x2 + 6x + 9

2 answers:

Lyrx [107]4 years ago

5 0

For (x + 6)2 you would add six a second time which is 12 then 12 times 2 is 24

For (x - 3)2 is 3 times 2 is 6 then subtract 3 is 3

For (x - 6)2 is 2 times 6 is 12 then subtract 6 which is 6

For (x + 3)2 you would do 3 times 2 is six then add three more is 9

QUICK NOTE IM REALLY SORRY IF THIS IS WRONG IM BAD AT MATH PLEASE DONT BE MAD

Andrei [34K]4 years ago

3 0

The answer is D.

I hope this helps. :)

I'm sure of that answer!

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A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm. Calculate the volume of

never [62]

Answer:

The volume of a cylinder is 62.8 cm and the volume of a cone is 20.9 cm³ .

Step-by-step explanation:

Formula

$Volume\ of\ a\ cylinder = \pi r^{2} h$

$Volume\ of\ a\ cone = \pi r^{2} \frac{h}{3}$

Where r is the radius and h is the height .

As given

A cylinder and cone have the same height and radius. The height of each is 5 cm, and the radius is 2 cm.

$\pi = 3.14$

Thus

$Volume\ of\ a\ cylinder =3.14\times 5\times 2\times 2$

= 62.8 cm³

Thus the volume of a cylinder is 62.8 cm³ .

$Volume\ of\ a\ cone = 3.14\times 2\times 2\times frac{5}{3}$

$Volume\ of\ a\ cone =\frac{5\times 3.14\times 2\times 2}{3}$

$Volume\ of\ a\ cone =\frac{62.8}{3}$

= 20.9 (Approx) cm³

Thus the volume of a cone is 20.9 cm³ .

Therefore the volume of a cylinder is 62.8 cm and the volume of a cone is 20.9 cm³ .

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Answer:

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