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Readme [11.4K]
2 years ago
5

I need help with this.​

Mathematics
1 answer:
anygoal [31]2 years ago
4 0

Answer:

D=4

C=12.56

Step-by-step explanation:

D=2r

d=2×2

D=4

C=pi ×D

C=3.14×4

C=12.56

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An isosceles triangle with equal sides of 5 inches and a base of 6 inches is inscribed in a circle. What is the radius, in inche
nikklg [1K]
Wow this is a doozy! First you have to figure out what is it you are looking for? If you make a dot in the center of the triangle (which is also the center of the circle) and draw a line from the center to one of the vertices of the triangle you have the radius of the triangle and also of the circle. If you draw all 3 radii from the triangle's center to its vertices, you see you have created 3 triangles within that one triangle.  The trick here is to figure out what your triangle measures are as far as angles go.  If we take the interior measures of those 3 triangles, we get that each one has a measure of 120 (360/3=120). So that's one of your angles, the one across from the side measuring 6. Because of the Isosceles Triangle theorem, we know that the 2 base angles have the same measure because the sides are the same. Subtracting 120 from 180 gives you 60 which, divided in half, makes each of those remaining angles measure 30 degrees. So if we extract that one triangle from the big one, we have a triangle with angles that measure 30-30-120, with the base measuring 6 and each of the other sides measuring 5. If we then split that triangle into 2 right triangles, we have one right triangle with measures 30-60-90. Dropping that altitude to create 2 right triangles not only split the 120 degree angle at the top in half, it also split the base side of 6 in half. So our right triangle has a base of 3 and we are looking for the hypotenuse of that right triangle.  WE have to use right triangle trig for that. Since we have the top angle of 60 and the base of 3, we can use sin60=3/x.  Solving for x we have x=3/sin60 which gives us an x value of 3.5 inches rounded from 3.464. I'm not sure what you mean by a mixed number unless you mean a decimal, but that's the radius of that circle.
6 0
3 years ago
PLEASE HELP, ITS TIMED HURRY >>>>
tresset_1 [31]

Answer:2

Step-by-step explanation:

IM FAST RIGHT???

3 0
3 years ago
Read 2 more answers
-2/3,1/3,-1/6,1/12<br><br> Use inductive reasoning to predict the next term in the sequence
Marianna [84]

Answer:

- 1/24

Step-by-step explanation:

Keep multiplying by -1/2 to find the 'next' term

1/12  * - 1/2  = - 1/24

4 0
2 years ago
Can someone please help meee?
qwelly [4]

Answer:

c.

Step-by-step explanation:

6 0
3 years ago
How many minutes are in 5.5 days
Hatshy [7]
There are 7,920 minutes in 5.5 days

60minutes in an hour
24hours in a day

60 times 24 times 5.5 = 7,920
7 0
3 years ago
Read 2 more answers
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