Answer:
B is the correct answer.
Step-by-step explanation:
Hey there!
The answer is false. A 90 degree angle is called a right triangle. Any angle less than 90 degree is called an acute angle. Any angle more than 90 degree is called an obtuse angle
I hope this helps you
Ax+By=C
By=C-Ax
y=C/B-A/Bx
m= -A/B
Answer is D You'll do the diameter squared then you multiply by π