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Vsevolod [243]
3 years ago
7

Find the volume of a cylinder with radius 5 and surface area 180pi

Mathematics
1 answer:
OLga [1]3 years ago
4 0

Answer:

The volume of a cylinder is 325π.

Step-by-step explanation:

The volume of a cylinder is given by:

V = \pi r^{2}h

Where:

h: is the height

r: is the radius = 5

We can find "h" from the surface area of the cylinder:

SA = 2\pi rh + 2\pi r^{2} = 180\pi

h = \frac{180\pi - 2\pi r^{2}}{2\pi r} = \frac{180\pi - 2\pi (5)^{2}}{2\pi*5} = 13

Hence, the volume is:

V = \pi r^{2}h = \pi*(5)^{2}*13 = 325 \pi

Therefore, the volume of a cylinder is 325π.

I hope it helps you!

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What is the solution to e/10>12.50
mrs_skeptik [129]

Answer:

e > 125

Step-by-step explanation:

Given

\frac{e}{10} > 12.50

Multiply both sides by 10 to clear the fraction

e > 125

8 0
3 years ago
Please answer the question in the picture down below.
rusak2 [61]

Answer:

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Step-by-step explanation:

2x + 3y^2 - 2(x - y^2)

2 * x = 2x

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2x + 3y^2 - 2x + 2y^2

Combine like terms

2x and -2x cancel ach other out

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6 0
4 years ago
P(x) = x3 - 2x2 + 2x<br> What are the real and complex zeros of the equation
vesna_86 [32]

Given:

The polynomial is

p(x)=x^3-2x^2+2x

To find:

The real and complex zeros of the equation.

Solution:

We have,

p(x)=x^3-2x^2+2x

For zeros, p(x)=0.

x^3-2x^2+2x=0

x(x^2-2x+2)=0

x(x^2-2x+2)=0

x=0\text{ and }x^2-2x+2=0

The real value of x is 0. The equation x^2-2x+2=0 will give complex roots. Here, a=1, b=-2 and c=2.

Using quadratic formula, we get

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(2)}}{2(1)}

x=\dfrac{2\pm \sqrt{4-8}}{2}

x=\dfrac{2\pm \sqrt{-4}}{2}

On further simplification, we get

x=\dfrac{2\pm \sqrt{-1}\sqrt{4}}{2}

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5 0
3 years ago
There is a ladder leaning against a wall
lozanna [386]

Answer:

12ft

Step-by-step explanation:

use sin cos tan method

here, we can see 6ft as adj to the angle and the ladder as hypotenuse

so, adj/hyp = cosθ

--> 6/hyp = cos60

--> hyp = 6/cos60

--> hyp, length of ladder =  12ft

5 0
3 years ago
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hram777 [196]

Answer: one billion 1,000,000,000 1 x 109

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Step-by-step explanation:

So sorry if this did not help!

5 0
3 years ago
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