Answer: 69
Step-by-step explanation: a triangle adds up to 180 degrees. It is an isosceles triangle (2 sides are the same angle) 180-42=138 then do 138/2=69
9/12 in the simplest form is 3/4
9/3= 3 and 12/3=4
Answer:
Length * Height * Width, or V = L * H * W.
Step-by-step explanation: