Arecipe for cookies calls for a 3 1/4 cups of sugar. amy has already put in 3 1/9 cups. how many more cups does she need to?

what is the original number? you forgot to add it.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft