A - area of a trapezoid;
a, b - two bases.
A = h * ( a + b ) / 2 / * 2 ( we have to multiply both sides by 2 )
2 A = h *( a + b )
2 A = h a + h b
h b = 2 A - h a
b = ( 2 A - h a ) / h
b = 2 A/h - a
Answer: D )
18·8.7= 156.6
23·56.1= 1290.3
47·5.92=278.24
Answer:
18.18%
Step-by-step explanation:
55-45=10
10/55=0.18
Step-by-step explanation:
It think I would be 4.5 if it’s the same order as the left side
