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SIZIF [17.4K]
4 years ago
14

Q # 6 please solve the equation

Mathematics
1 answer:
nevsk [136]4 years ago
6 0
The answer is 314,000,000 ft^2

pi r^2

3.14* 10,000^2

3.14*100,000,000

314,000,000
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Find the area of the region between two concentric circular paths. If the radii of the circular paths are 210 m. and 490 m. resp
taurus [48]

Given :

  • The radii of the circular paths are 210 m. and 490 m.

To Find :

  • The area of the region between two concentric circular paths.

Solution :

Area of the outer circle :

\: \qquad  \dashrightarrow \sf{{ \pi \: \times  {(490)}^{2}  {m}^{2}}}

\: \qquad  \dashrightarrow \sf{{ \ \dfrac{22}{7} \times   \:490 \times 490 \:  {m}^{2}}}

\: \qquad  \dashrightarrow \sf{{ \ \dfrac{22}{ \cancel{7}} \times   \cancel{490} \times 490 \:  {m}^{2}}}

\: \qquad  \dashrightarrow \sf{{ \ {22} \times   70 \times 490 \:  {m}^{2}}}

\: \qquad  \dashrightarrow \bf{{ \ 754600 \:  {m}^{2}}}

⠀

Area of the inner circle :

\: \qquad  \dashrightarrow \sf{{ \pi \: \times  {(210)}^{2}  {m}^{2}}}

\: \qquad  \dashrightarrow \sf{{ \ \dfrac{22}{7} \times   \:210 \times 210 \:  {m}^{2}}}

\: \qquad  \dashrightarrow \sf{{ \ \dfrac{22}{ \cancel{7}} \times   \cancel{210} \times 210 \:  {m}^{2}}}

\: \qquad  \dashrightarrow \sf{{ \ {22} \times   30 \times 210 \:  {m}^{2}}}

\: \qquad  \dashrightarrow \bf{{ \ 138600 \:  {m}^{2}}}

⠀

Therefore,

Area of the region inside the circular paths :

\: \qquad  \dashrightarrow \sf{{ \ (754600 - 138600  )  \: {m}^{2}}}

\: \qquad  \dashrightarrow \bf{{ \ 616000 \:  {m}^{2}}}

6 0
2 years ago
In a survey music preferences
Over [174]
81/450 is 0.18.
If you move the decimal place to the right two spots, you've got your percentage.
18% said they preferred country music.
7 0
4 years ago
Read 2 more answers
Anybody know how to do this ?
pogonyaev

Hey there!

The interior angles of a triangle equal 180.

We can use this and the measures of the angles we are given to find the missing interior angle.

50+93=143

180-143=37

Since the missing angle (37) and angle x are supplementary, they add up to 180 as well.

37 + x = 180

180 - 37 = 143

x = 143

Hope this helps!

7 0
3 years ago
Read 2 more answers
Anyone got an answer <br><br>also it doesn't gimme the option of making this 5pts :(
Shtirlitz [24]

Answer:

Step-by-step explanation:

Each of the squares has trinomials that factor. x^2 - 14x + 49 = (x - 7)^2

When you take the square root (to get the side length) you get x - 7. So the length of each square is x - 7) = 0;..........x=7 That's the answer to a.

The answer to b is the same. The width =7

It's a square both sides have to be equal.  

The length of the rectangle when the two squares are put together is 7 +7 = 14.

Answer: Question a = 7..... Question b = 7 ......... Question C = 14

8 0
3 years ago
Answer these questions
Gnom [1K]

1. Ratio between onions and tomatoes:

There are 3 onions and 4 carrots.

Therefore, required ratio is 3:4


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There are 6 tomatoes and 5 cups of chicken stock.

Hence, the required ratio is 6:5.


3. Sticks of butter to bananas:

There are 1 stick of butter and 2 bananas.

So, the required ratio is 1 to 2.


4.  Teaspoons of salt to teaspoons of black pepper:

There are 2 teaspoons of salt and 1 teaspoon of black pepper.

Please refer attached figure.


5. Let's calculate the ratio of cups of chocolate chips to tomatoes.

There are 3 cups of chocolate chips and 6 tomatoes.

Hence, the required ratio is 3:6 and on simplifying, 1:2.

5 0
3 years ago
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