I don't know but i think 113.09733552923255
Do you have a picture that shows the graphs
Height over shadow
H/S
9 in is 9/12=.75
So
Boys height /shadow. Flags height /shadow
4.75/6= X/19
Cross multiply
6x= 90.25
Divide by 6
X= 15.0
Its a half like 1/2 half of a circle or if you have a grid of 100 you would shade 50
2+3sqrt9= 2+3(3)=2+9= 11
cube root of 1000 divided by 5= 10/5= 2
3sqrt9-4cube root64=3(3)-4(4)=9-16= - 7
