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natita [175]
3 years ago
9

A DVD disc has a diameter of 12 centimeters. What is the surface area of one side of the disc?

Mathematics
1 answer:
adell [148]3 years ago
6 0

Answer: 36pi = 113.097336

Step-by-step explanation:

diameter/2 = 6

6^2=36

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One fifth of the sum of two angles is 24 and half their difference is 14.Calculate the two angles
Brums [2.3K]
Let, the angles = a, b
It is given that, a+b /5 = 24
a + b = 120   --- equation (1)

a-b/2 = 14
a - b = 28  ---- equation (2)
a = 28 + b

Now, substitute this value of b in equation (1), 
28 + b + b = 120
2b = 120 - 28
b = 92/2
b = 46
Now, a = 28 + b = 28 + 46 = 74

In short, Your Angles are 74 and 46

Hope this helps!
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The weights of 2-pound bags of Best Dog Food are approximately normally distributed with a given mean ul and
Arte-miy333 [17]

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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8 0
2 years ago
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Orlando is doing a math problem where he needs to dilate a triangle by a scale factor of four. The ordered pairs for his pre-ima
Rainbow [258]
Dilation refers to a non rigid motion where a figure is transform and its image has the same form but a different size measure.
Dilation is define by the rule (x,y)-- (kx, ky) where k represents the scale factor.

On this exercise is given that a triangle with vertices (-2,1), (8,4), and (3,0) was dilated by a scale factor of four, and it is asked to find the vertices of the image of the triangle after the dilation occurred.

Pre-image                       Image
(-2,1)  --   (-2*4,1*4)   --   (-8,4)
(8,4)   --    (8*4,4*4)   --    (32,16)
(3,0)   --    (3*4,0*4)   --    (12,0)

The coordinates representing the vertices of the triangle's image are (-8,4), (32,16), and (12,0); meaning that the ordered pair which is not a coordinate for a point in the triangle's image is (2,1).



5 0
3 years ago
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Which expression is not equal to the expression shown?
igor_vitrenko [27]

Answer: 3x3

Step-by-step explanation:

3 0
3 years ago
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