Angle e = x angle d = 5x supplementary means they add up to 180
x + 5x =180
6x = 180
6x/6 = 180/6
x = 30
so angle e = 30 and angle d = 5(30) = 150
Answer:
Base area of box = 
Step-by-step explanation:


Base area of a rectangular box is a rectangle
Area of a rectangle (base area)= length times width


Base area = 
Multiply x inside the parenthesis
Base area of box = 
Answer:
4..............21...........