Right rectangular prism’s surface area and volume.

To find the surface area of a rectangular prism, all you have to do is find each side’s areas then add them all together. For surface area, the final answer must have a squared unit (n²), where the n is the unit.

The formula for it is: SA = 2(b*l) + 2(b*h) + 2(l*h)

 

For the volume, you just have to multiply the base, height, and length. For volume, the final answer must have a cubed unit (n³), where the n is the unit.

The formula for rectangular prism’s volume is: V = b*h*l

 

Base = b; Length = l; Height = h.

Example:

b = 20.4 mm

l = 21.2 mm

h = 5.1 mm

SA = 2(20.4 * 21.2) + 2(20.4 * 5.1) + 2(21.2 * 5.1) = 1289.33 mm²

V = (20.4)(21.2)(5.1) = 2205.6 mm³