Question

What is the volume of the figure below if a = 9 units and b = 7 units?

Answer 1

The answer is:

The reason is:

bottom one is a square prism. the volume formula is l x w x h. 9 x 9 x 9

square prism : 729

then the top one is a triangular prism. which is 1/2b x a x a
so 3.5 x 9 x 9

triangular prism: 283.5

then add these 2 numbers

1012.5