I’m pretty sure that it’s the third answer (q^12)! :)
EF=9 cm. Both triangles are the same.
The answer is F because you use the square's measurements as the base of each triangle then multiply each triangle then divide by 2. The multiply by 4 because there are four triangles and multiply 12 by 12 to get 144 because it is the base and the height of the square.
2/3-1/3= 1/3
So Shane grew 1/3 of an inch more hair than his brother.
