A^3+b=c^2 solve for a and show me how you got that answer

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap