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Kamila [148]
3 years ago
15

If the circumference of a circle is 10π inches, what is the area, in square inches, of the circle?

Mathematics
1 answer:
Vlad1618 [11]3 years ago
4 0

Answer:

25π square inches or 78.5 sq in

Step-by-step explanation:

circumference = π x diameter

thus

10 π inches= π x d

d = 10 inches

area of circle = π x d x d / 4

= π x 10 x 10 x 4

= 25π sq in

= 78.5 sq in

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The area of the circle above is 314 units2. What is the circumference of the circle? use 3.14
aleksandrvk [35]

Answer:

r =\sqrt{\frac{314 units^2}{3.14}} = 10 units

And the circumference is given by this formula:

C = 2\pi r

And replacing the value fo r we got:

C = 2\pi *10 units = 62.8 units

And then the final answer would be 62.8 units for the circumference.

Step-by-step explanation:

For this case we know that the area for a circle is given by:

A = \pi r^2

And we know that A = 314 units^2

We can find the radius from the previous formula like this:

r^2 = \frac{A}{\pi}

r^2 = \frac{314 units^2}{\pi}

r =\sqrt{\frac{314 units^2}{3.14}} = 10 units

And the circumference is given by this formula:

C = 2\pi r

And replacing the value fo r we got:

C = 2\pi *10 units = 62.8 units

And then the final answer would be 62.8 units for the circumference.

8 0
3 years ago
The outside temputure was -4 f in the morning and 13 f in the afternoon.by how much did the temputure increase
defon

Answer:

17

Step-by-step explanation:

You need to add 4 degrees to get to 0.

You need to add 13 degrees to get to 13

The total = 4 + 13 = 17                      

5 0
3 years ago
Solve the following equation for x.<br><br><br> A. <br><br> B. <br><br> C. <br><br> D.
Minchanka [31]

Answer:

B.

Step-by-step explanation:

8/7 - 5x + 2 = x/5 - 12

8/7 + 14 = x/5 + 5x

106/7 = 26x/5

x = 265/91

6 0
3 years ago
Read 2 more answers
What is <br> 2<br> - ---- x times 15<br> 3
sukhopar [10]

If you are asking what 2/3 times 15 is its 10

5 0
4 years ago
Cindy has a poster in the shape of a parallelogram.
Galina-37 [17]

You are basically trying to find the area of two triangles and a rectangle.

Rectangle= A= length*width

Triangle= A= 1/2*base*height

Rectangle:

1.5*1.9= 2.85

Two triangles:

A= 1/2* 0.5*1.5

A=1/2*.75

A=0.375

Multiply that by two, because the triangles are the same. 

.75

.75+2.85= 3.6

3.60 ft^2 <== the answer :)

Always message me when you need help like this! I’m a college educated student! All subjects are answered!

8 0
4 years ago
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