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2 years ago

Whats the radius and center of (x+4)^2+(y-2)^2=9

Mathematics

1 answer:

Fiesta28 [93]2 years ago

8 0

I believe the center would be (-4,2) while the radius should be 3.

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Surface Area of Cylinder=2πrh+2πr2

Alex

Find the surface area when r is 8 inches and h is 8 inches.

$\qquad$ A. 160π in²

$\qquad$ B. 154π in²

$\qquad$ C. 288π in²

$\qquad$ D. 256π in² ☑

We are given –

$\qquad$ ⇢Radius of cylinder , r = 8 inches

$\qquad$ ⇢ Height of cylinder, h = 8 inches.

We are asked to find surface area of the given cylinder.

Formula to find the surface cylinder given by –

$\bf \star \pink{ Surface\: Area_{(Cylinder)} = 2\pi rh +2\pi r^2 }$

Now, Substitute given values –

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2\pi rh +2\pi r^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2 \pi \times 8 \times 8 + 2\pi \times 8^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2 \pi \times 8^2 + 2\pi \times 8^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2\pi \times 64 +2\pi \times 64$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} =128 \pi + 128\pi$

$\purple{\bf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 256\pi \: in^2 }$

Henceforth,Option D is the correct answer.

8 0

1 year ago

Someone help me PRETTY PLEASE :(((!!!!!!!!!!

Alecsey [184]

It is B. and i would answer it!!!!!!

HOPE THIS HELP!!!!!! :)

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2 years ago

F(x)=x^2+3x ... find f(2-a)

olga2289 [7]

(2-a)^2 + 3(2-a)

A^2 -2a + 4 + 6 -3a

A^2 -5a +10

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3 years ago

Read 2 more answers

Suppose thirty-two students signed up for classes during an orientation session. If

Elis [28]

Answer:

Step-by-step explanation:

add the total that signed up for chemistry with the total that signed up for english which would be 20+16=36

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2 years ago

Plz help Plz help, The figure below is a net for a triangular prism. Side a = 18 feet, side b = 9 feet, side c = 22 feet, side d

Wittaler [7]

Answer:

295

Step-by-step explanation:

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2 years ago