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zysi [14]
2 years ago
13

A triangle has a 60 degree angle, and the two adjacent sides are 12 and 12 times the square root of 3. Find the radius of a circ

le with the same vertex as a center, if the arc inside the triangle divides it into two regions of equal area.
Please somebody ?

Correct answer gets BRAINLIEST !
Mathematics
1 answer:
Natasha_Volkova [10]2 years ago
5 0

The radius of the circle is a line from the center of the circle to its circumference

The radius of the circle with the same vertex as a center is 10.16 units

<h3>How to determine the radius</h3>

From the question, we understand that:

  • The adjacent sides of the triangle are 12 and 12\sqrt 3
  • The triangle has an angle of 60 degrees

Start by calculating the area of the triangle using:

Area = 0.5ab\sin C

So, we have:

Area = 0.5 * 12 * 12\sqrt 3 *\sin (60)

This gives

Area = 0.5 * 12 * 12\sqrt 3 * \frac{\sqrt 3}{2}

Area = 108

The arc divides the triangle into two equal regions.

So, the area of the arc is:

Arc = 0.5 * Area = 0.5 *  108

Arc = 54

Also, the area of the arc is:

Arc = \frac{\theta}{360} * \pi r^2

So, we have:

Arc = \frac{60}{360} *3.14 * r^2

Simplify

Arc = 0.523 * r^2

This gives

0.523 * r^2 = 54

Divide both sides by 0.523

r^2 = 103.25

Take the square roots of  both sides

r = 10.16

Hence, the radius of the circle with the same vertex as a center is 10.16 units

Read more about circumcised triangles at:

brainly.com/question/4268382

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Question: What is the coefficient in the expression 10x²-7?

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The length of each edge of a cube is decreased by 40 percent By what percent does the volume of the cube decrease? Express your
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Answer:

78% (to the nearest tenth)

Step-by-step explanation:

Volume of a cube = (length )³

Let the length of the cube = y

Original volume = y³

if the length is decreased by 40%, then new length = 1- (40% of y)

                                                                                     = 1-0.4y

                                                                                     =  0.6%

New volume (after decreasing the length) = (0.6y)³

                                                                      =  0.216‬‬y³

% Volume decrease = (Original volume - New volume)/Original Volume x 100%

                                 =  (y³ - 0.216‬‬y³)/ y³  x 100%

                                 = 0.784y³/y³  x 100%

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