Answer:

Step-by-step explanation:
Interior angles of a triangle = 180°

I hope I helped you^_^
If area is 81pi then 81pi=pir^2. Divide both sides by pi and we are left with r^2=81 take the square root of both sides to find the radius is 9 then plug that into the equation for circumference(2pir) so 2pi(9)=18 pi so the answer is E 18pi
Answer:
430
Step-by-step explanation:
10.75 × 8 = 86
86 × 5 = 430
Answer:
C is an independent variable
Step-by-step explanation:
The input is the number you feed into the expression
Answer
Decimal is 3.6
Percent is 360%
Step-by-step explanation: