FD/CA = EF/BC
x/(8.5 mm) = (12 mm)/(4 mm)
x = (8.5 mm)*(12/4)
x = 25.5 mm . . . . . . . . . . . the 3rd selection
Can u send me a picture of the question instead please because i dont understand what ur trying to ask..
3 to 9 clouds are smiley faces Explaintion- hope it’s right
