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Oduvanchick [21]
4 years ago
7

PLEASE HELP Geometry

Mathematics
1 answer:
AveGali [126]4 years ago
5 0
Area of square = 8^2 = 64
Area of circle = pi x r^2 = 3.1415 x 4^2 = 50.27

64 - 50.27 = 13.73

answer
area inside square but outside circle = 13.7 in^2 (it's C.)
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By selling a radio for $8400 a dealer gained 12% .how much money did she gain​
Mkey [24]

See, in these type of questions always first assume your original price to be x. And now try to write whatever information is given to you.

Now, you have that it has been sold for 12% profit, so basically it is sold at. (1 + (12/100))x = 1.12x

Now it is given that if it had been sold for 33₹ more. I.e. if it had been sold at. 1.12x + 33

Net gain would have been 14%.

So gain of 14%, means the cost to be (1+(14/100))x = 1.14x

And basically both 1.12x +33 and 1.14x are final costs, so

1.14x = 1.12x + 3

=> 1.14x - 1.12x = 3

=> 0.02x = 3

=> x = 3÷0.02

=> x= 1650₹

So original cost is 1650₹.

Hope you understand the solution and the way to tackle these type of problems if not then let me know.

hope it helps

pls mark my anwers as brainiest

6 0
3 years ago
Read 2 more answers
A certain circle can be represented by the following equation. x^2+y^2+6y-72=0 What is the center of this circle ?
jek_recluse [69]

Answer:

(0, -3)

Step-by-step explanation:

Here we'll rewrite x^2+y^2+6y-72=0 using "completing the square."

Rearranging x^2+y^2+6y-72=0, we get  x^2 + y^2 + 6y                = 72.

x^2 is already a perfect square.  Focus on rewriting y^2 + 6y as the square of a binomial:  y^2 + 6y becomes a perfect square if we add 9 and then subtract 9:

x^2 + y^2 + 6y + 9  - 9              = 72:

x^2 + (y + 3)^2 = 81

Comparing this to the standard equation of a circle with center at (h, k) and radius r,

(x - h)^2 + (y - k)^2 = r^2.  Then h = 0, k = -3 and r = 9.

The center of the circle is (h, k), or (0, -3).

8 0
3 years ago
Greta bought three 15-pounds bags of dry dog food.Her dog eats 10 ounces of dry dog food each day.After how many days will Greta
sdas [7]
72 days

there are 720 ounces total (convert 45 pounds to 720 ounces)
divide that by the 10 ounces per day and get 72 days
8 0
3 years ago
Read 2 more answers
5. A construction area has 6 cylindrical posts protecting the
Juli2301 [7.4K]

Answer: what’s the answer ?

Step-by-step explanation:

5 0
3 years ago
All exponential functions can be written in many forms. Write the function f(t)=110(1.35)^{\frac{t}{40}}f(t)=110(1.35) 40 t ​ in
Mkey [24]

Step-by-step explanation:

Given - f(t)=110(1.35)^{\frac{t}{40}}

To find - Write the function in the form f(t)=ae^{kt}. Round all coefficients

               to four decimal places.

Proof -

Given that , the function is  f(t)=110(1.35)^{\frac{t}{40}}

Now,

We can write it in the form of  f(t) = 110(1.35)^{\frac{t}{40} }

By comparing with the form  f(t) = ae^{kt} , we get

a = 110.0000

k = \frac{1}{40} = 0.0250

7 0
3 years ago
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