Question

A 40 ft ladder leans against a wall so the base of the ladder is 11 feet away from the base of the wall . What angle does the ladder make with the wall?

Answer 1

i believe that you set it up like cos(x)= a/h
a= 11 feet
h= 40 feet
then you take the inverse cos of 11/40

Answer 2

The base of a right rectanglar prism is 12 cm by 8 cm. The height is 5 cm. Find its surface area.