I have asked this question before, but I think I provided some wrong information, so here is the question again. Please help me.

Question

A right trapezoid with a bottom base equals to 8cm and its area equals to 40cm^2. Solve for both its height and its upper base?

Answer 1

Answer 2

Still insufficient information:

40 = (0.5)(b₁ + b₂)h

80 = (b₁ + b₂)h

80 = (8 + b₂)h

We can go no further without b₂