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shtirl [24]
2 years ago
15

The distance from the center of a center of a compact disc to the edge of the disc is 6 centimeters. What is the area of the com

pact disc?
A. 452.16 square centimeters
B. 36 square centimeters
C. 113.04 square centimeters
D. 18.84 square centimeters
Mathematics
1 answer:
melamori03 [73]2 years ago
3 0
This is the area of a circle with radius 6 cms
=  pi * r^2
= 36pi
=  113.04 cm^2

C
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lara [203]
We can write this in math as x+y+z=104, x=y-6, and z=3y

Because we already know what x and z are in terms of y, we can substitute our values for x and z into the first equation. This now looks like (y-6) + y + (3y) = 104. Now we can simplify our equation to find our value for y.

y-6 + y + 3y = 104 simplifies to 5y - 6 = 104, then 5y=110, and finally y=22.

Now that we know our value for y we can find our values for x and z by substituting our value for y into the other two equations.

The second equation x = y-6 can be simplified as x = 22 - 6 and further simplified as x = 16.

The third equation z = 3y can be written as z = 3(22) or z = 66.

Our three numbers are 16, 22, and 66. Hope this helps you!
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IceJOKER [234]

Answer:

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