How do I figure out the area of a triangular square prism. side =8.5cm and length is 9.6cm

What is the formula I need to get this problem solved properly?

41/2 - 1 1/3 what is the answer as a fraction?

The height of a triangle is 4 in. greater than twice its base. the area of the triangle is no more than 168 in.^2. which inequalitycan be used to find the possible lengths, x, of the base of the triangle?

What is the solution of the systems of equations? y=2/3x+3 x=-2