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vlabodo [156]
3 years ago
12

How do you solve that?

Mathematics
1 answer:
LenaWriter [7]3 years ago
4 0
The formula for area of a triangle is base x height divided by 2.
Multiply the base of the triangle by the height and divide the quotient by two.
The formula for perimeter of a triangle is very easy. It is a + b + c, or, just add all of the numbers.
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Step-by-step explanation:

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Answer:

70.52 degrees

Step-by-step explanation:

To find the angles, we must first find the lengths of each side of the triangle. Adding up the respective radii, we can see that

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solving for our unknown angle:

x\:=\:cos^{-1}\left(\frac{9^2+10^2-11^2}{2\cdot 9\cdot 10}\right)

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