Idon't know how to get five number summary

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.