5 ABCD is a tetrahedral drinks carton. Triangle ABC is the base and B is a right angle. Dis vertically above A.
Calculate the following in terms of the appropriate lettered side(s):
a the length of AC
b length of DA
c the length of DC
d the size of angle DAB
e the size of angle BDC
f the size of angle ADC.

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.