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givi [52]
4 years ago
6

Calculate the shaded area inside the square of side 80

Mathematics
2 answers:
satela [25.4K]4 years ago
8 0
The area of the shaded region is 1,373.45 units sq.

First find the area of the square (80*80=6400) then find the radius of the circle which is 80/2=40. Using the radius find the area of the circle ((pi)(40)(40)=5026.55) then subtract the area of the square with the area of the circle (6400-5026.55= 1373.45)
hoa [83]4 years ago
8 0

In order to find the area of the shaded area, we have to find the area of the entire square, unshaded and shaded and then divide it by the area of the circle.

First, let's find the area of the square:

80*80 = 6400

That wasn't too bad, was it?

The equation to solve for the area of a circle is πr^2.

Since we know that the diameter of the circle is 80, we simply divide it by 2 to find the radius, which is 40.

40^2 * π = 1600π

Turn π into 3.14 to completely solve for the area:

1600*3.14 = 5024

Subtract the area of the square by the area of the circle:

6400 - 5024 = <u>1376</u>

<u>The area of the shaded part of the square is 1376 units squared.</u>

Good luck!

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Andreyy89
So we start off by subtracting 137.3 from 180 getting 42.5. If you add the ratios up (3+4) you get 7 and 7 should equal 42.5. thus,

42.5/7= 85/14

(85/14)*3=18.2 or (255/14 to be exact)
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8 0
3 years ago
Find the perimeter of a parallelogram whose base is 8cm and another side is 12cm
lidiya [134]

A parallelogram

P=2(a+b)

The answer is 64

P=2(a+b)=2·(24+8)=64

6 0
3 years ago
Write the answer with the correct number of significant digits. Don't use any commas in your answer. Only use a
lawyer [7]
386 x 21 = 8.106

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3 0
3 years ago
At the beginning of January, Kesia Records paid $148,950 to acquire the exclusive rights to a new album. It costs them $1.13 to
ale4655 [162]

Answer:

d. May

Step-by-step explanation:

To find when Kesia records got to break even, we first need to find how much they made total per month.

Now we need to first find how much they made on January.

The production cost of January will be:

Production cost = 5486 x 1.13

Production cost = $6199.18

Now that we know the production cost, we need to solve first for the total revenue.

Total Sales Revenue = 5486 x 9.75

Total Sales Revenue = $53488.50

Now that we have both the revenue and the production cost, we need can find how much profit by:

Profit = Total Sales Revenue - Production cost - Overhead

Profit = 53488.50 - 6199.18 - 27714

Profit = $19575.32

So they made a profit of $19575.32 by the end of January.

Now we move on to the other months.

Production cost = 8191 x 1.13

Production cost = $9255.83

Total Sales Revenue = 8191 x 9.75

Total Sales Revenue = $79862.25

Profit = 79862.25 - 9255.83 - 21689

Profit = $48917.42

Now that we have the profit for 2 months, we simply add them together.

Current Value = 19575.32 + 48917.42

Current Value = 68492.74

By doing the same process with the rest of the months, we get:

Refer to Image.

We can see in the image that by May they reach a total profit of $149897.77.

Since Kesia records paid $148950, the company got to break even at the month of May.

5 0
3 years ago
How do you Expand 2(z+3)??????????????
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Answer:

2z+6

Step-by-step explanation:

you just multiply the z and 3 by 2.

8 0
2 years ago
Read 2 more answers
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