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lys-0071 [83]
3 years ago
12

PLZ HELP ASAP ROTATE 2D SHAPES IN 3D

Mathematics
2 answers:
Yuri [45]3 years ago
4 0
The answer is A. A cylinder with radius of 2.

When the rectangle rotates with respect to line 'm' the side having the longer measure which is side with 2 units will be overlapping the side of 1 unit.
dangina [55]3 years ago
3 0
The correct answer is A. A cylinder with radius 2 units.
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Ulleksa [173]

Step-by-step explanation:

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2 years ago
Is x - 0.30x equivalent to 0.70x?
vlada-n [284]

hi

it's equal to as X = 1X  

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3 years ago
Read 2 more answers
Volume and surface area are often compared by manufacturers in order to maximize how much of something can go inside of a packag
notka56 [123]
We have no dimensions to work with. I'll pick some and try and comply with the conditions of the problem. 

Suppose you have an object that is 14 by 22 by 27 cm. These three numbers have no common factor so they cannot be reduced any further, which is helpful for this problem.

Find the Volume
Volume

l = 27 cm
w = 14 cm
h = 22 cm

V = 27 *14 * 22
V = 8316 cm^3

Find the surface area
SA = 2*l*w + 2*l*h  + 2*w*h
SA = 2*27*14  +  2*27*22   +  2*14*22
SA = 756 + 1188 + 616
SA = 2558

Just looking at these numbers The surface area is about 1/3 of the volume. I don't think this is always true.


 \frac{SA}{V} =  \frac{2*L*W  + 2*L*H + 2*W*H}{L*W*H} 

Another way to do this is to consider a cube which might give you a more useful result. 

s = L = W = H all three dimensions are equal in a cube.
The volume of a cube is s*s*s = s^3
The surface area of a cube is 2*s*s + 2*s*s + 2s*s = 6s^2

\frac{SA_cube}{V_cube} =  \frac{6s*s}{s*s*s}
\frac{SA}{V} =  \frac{6}{s}

That means whatever the side length, the Surface Area to volume = 6/the side length which is kind of an interesting result.


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8 0
2 years ago
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