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andreyandreev [35.5K]
3 years ago
12

PLEASE ANSWER ASAP FOR BRAINESLT!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
guapka [62]3 years ago
8 0

Step-by-step explanation:

a = \pi {r}^{2} \\ a = \pi {5}^{2}  = 78.5 \:  {in}^{2}

sweet-ann [11.9K]3 years ago
6 0

Answer:

The area of this circle is 78.5

Step-by-step explanation:

The area of a circle can be calculated with the equation πr². r stands for "radius", the distance between the center of the circle to any point of its edge which also equals to half of a circles diameter. Since the diameter of this circle is 10 in., its radius is

r = d/2 = 10/2 = 5\\

Then, we use this to find the area

Area =\pi r^2=\pi (5)^2=25\pi=78.5 (rounded to the first decimal place)

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Helpppppp plsssssssss
bekas [8.4K]

Answer:

C

Step-by-step explanation:

The right triangle on the right side of the figure has a height of 6 (two same sides lengths) and a base of 3.

x is the hypotenuse (side opposite of 90 degree angle).

We can use the pythagorean theorem to find x. The pythagorean theorem tells us to square each leg (height and base) of the triangle and add it. It should be equal to the hypotenuse square.

For this triangle it means, we square 6 and 3 and add it. It should be equal to x squared. Then we can solve. Shown below:

6^2 + 3^2 = x^2\\36 + 9 = x^2\\45 = x^2\\x=\sqrt{45}

<em>Now we can use property of radical  \sqrt{x}\sqrt{y}  =\sqrt{x*y}  to simplify:</em>

x=\sqrt{45} \\x=\sqrt{5*9} \\x=\sqrt{5} \sqrt{9} \\x=3\sqrt{5}

Correct answer is C

6 0
3 years ago
Read 2 more answers
A sphere has a volume of 36π in3. What is the radius of the sphere?
amm1812

Answer:

r = 3 inches

Step-by-step explanation:

The formula for the volume of a sphere is the following:

V = (4π/3)r^3

You know the volume so plug that in for V:

36π = (4π/3)r^3

27 = r^3 (multiply by 3/4π to get r^3 by itself)

r = 3 (you take the cube root of r and 27 to get the value of r)

Hope this helps :)

3 0
3 years ago
Read 2 more answers
Help with 2 show work
Wittaler [7]
A. from 67.86 all the way to the end. (67.86 is not filled)
b. $67.86,
    $80.00,
    $70.00(values equal to or greater than $67.86.)
c. There are many values that represent this inequality.(values equal to or greater than $67.86)

Hope this helped☺☺

8 0
3 years ago
What percent of 16 is 10
e-lub [12.9K]

62.5 is the answer to your question

8 0
3 years ago
The measure of an angle is 60° less than nineteen times the measure of its supplement. what is the measure of the angle?
DerKrebs [107]
Two angles are supplementary when they <span>add up to 180 degrees.

x = angle
19x-60 = </span><span>supplement angle

x + 19x - 60 = 180
20x = 180 + 60
20x = 240
x = 240/20
x = 12</span>°  ← answer
3 0
3 years ago
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