Answer:
12%
Step-by-step explanation:
calculator
The a is 11
g(4)=20+a
g(4)=31
31-20=11
a=11
Answer:
A
Step-by-step explanation:
To do this, use this formula=The area is always pie times the radius to the 2nd. But this is for a semicircle so divdie your answer by 2