Assuming that it is a tank which includes a lid, the surface area is 1300 square feet.
432cm3
It is 180 square feet.
No. It is a parallelopiped. And, if it is a right rectangular prism then it is a cuboid.
I presume you mean a rectangular prism. Assuming all the angles are right angles, so that it is a rectangular parallelepiped, the volume is just the product of the three dimensions. I get 90.
It is: 72A cubic inches
720 in3
no
If the prism is a rectangular parallelepiped (that is, all the angles are right angles), just add the squares of the 3 dimensions (length, width, and height) together, and take the square root. This involves 2 applications of the Pythagorean Theorem.
Assuming you mean a rectangular prism, you get the smallest surface area if the prism is a cube. You can calculate the required length of side to get that volume; then, based on that, the corresponding surface area.
The dimensions given do not support Pythagoras' theorem for a right triangular prism which will have a right angle triangle at each end
yes, they are different.
A rectangular prism has six faces; each face has four right angles. There are 24 right angles in all.