Answer:
1. 44.8
2. 9.6
3. 61.11
4. 50.41
5. 169
12. 300
13. 1.44
14. id k
15. a. 21
b. 28
c. 35
d. 31.5
Step-by-step explanation:
sry abt the stuff i didn't answer, i couldn't find the answer
Answer: C
A= 1/2(a+b)xh
A=1/2(7+10)x5
A=8.5x5
A=42.5
is 
, so any range such that 
will give two complete periods.
