Answer:
24
Step-by-step exp
Because thats the answer
Answer:69.66
r=9 so diameter is 18, and the shape being a square you do 18 x 18 = 324
now the circles area is 254.34 now find the difference... and it is 69.66
Step-by-step explanation:
c=20
d and b
16.67
78 / 4.68
= 7800 / 468
= 16.67