Picture needed. not enough info
Answer:
The Area of a circle is

Therefore the Area of Circle A is

Area of Circle B is

Circle C

Circle D

He/she idk, got a higher score on the second test. How you do it is divide the score by the number out of it so like 19 divided by 25. Umm for the ratio, I'm not really sure, I guess you just do 19:25 and 17:20
Answer:
4900
Square Root of 30: 5.47722557505- round it up
Step-by-step explanation:
70x70
7x7=49
add the 2 zeros at the end
4900