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coldgirl [10]
2 years ago
5

Find the surface area and volume oF a cylinder 2 cm radius 18 cm height

Mathematics
1 answer:
Murrr4er [49]2 years ago
3 0

Answer:

r = 2cm

h= 18cm

surface area of cylinder = 2πr ( r + h)

                                          = 2*22/7*2(2+18)

                                          = 125.714cm²

volume of cylinder = πr²h

                               22/7*(2)²*18

                             =226.29cm³

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Idk how to get this answer actually. It's just my first guess, and it happened to be right.
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2 years ago
How do I solve 3(2x+1)
jonny [76]

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3 years ago
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What is the solution to the equation 3.6m − 2.7 = −1.8m?
Finger [1]

Answer:

Option B is correct

m = 0.5 is the solution to the equation

Step-by-step explanation:

Given the equation:

3.6m-2.7= -1.8m

Add 2.7 to both sides, we have;

3.6m-2.7+2.7= -1.8m+2.7

Simplify:

3.6m = -1.8m+2.7

Add 1.8 m to both sides we have;

5.4m =2.7

Divide both sides by 5.4 we have;

m = \frac{1}{2} = 0.5

⇒m = 0.5

Therefore, the solution for the given equation is, 0.5

7 0
3 years ago
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Meldie made a cube whose side is (3x - 2) inches. Find its volume in cubic inches.
irinina [24]

Answer:

x^2(3x-2) cubic inches OR in^3

OR

3x { 3 [ 3x ( x - 2 ) + 4 ] } - 8 cubic inches OR in^3

I AM UNAWARE IF YOU ASKED THAT ONE SIDE IS (3X-2) OR ALL. I WILL ANSWER BOTH PARTS

<em>-</em>

<em>NOTE</em><em>:</em><em> </em><em>'</em><em>^</em><em>'</em><em> </em><em>MEANS</em><em> </em><em>TO</em><em> </em><em>THE</em><em> </em><em>POWER</em><em> </em><em>OF</em><em>.</em><em>.</em>

<em>-</em>

Volume = v, abc = 3 sides of cube (height, width, length)

Using the formula for volume in a cube,

v = abc

We can solve this.

If one side is (3x-2)in,

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  • x^2(3x-2) = v

x^2(3x-2) cubic inches OR in^3

If all sides are (3x-2)in,

Use the formula,

(a - b) ^{3}  =  {a}^{3}  + 3ab(b - a) -  {b}^{3}

We can solve this.

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If you have any questions regarding formulas or anything, comment and I will get back to you asap.

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5 0
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Now, the side of the cube =  foot each.

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