C = 2 x pi x r
divide each side by 2 x pie to get r by itself.
45/(2(3.14)) = r
r = 7.17
Answer:
The answer is B. Acute isosceles
What? Do you have a picture that reveals what you need help in?
The law of cosines states that, if
is the angle between sides b and c,

So, plugging our values, we have

This is equal to

Answer:
b
Step-by-step explanation: