Step-by-step explanation:
Circumference (C):

Area (A):

40% are boys. divide 2 by 5 and then multiply by 100
0 has none and 9 has 9 place value i think lol
Let the original number be x
X^2 + 11 = 36
Subtract 11
X^2 = 25
Square root both
X = 5
Solution: her original number is 5