Find the surface area of a rectangular prism the sides of the right triangular base 9 centimeters 12 centimeters and 15 centimeters the height of the prism is 20 centimeters

The area of the base and top is given by:

A1 = (1/2) * (9) * (12)

A1 = 54 cm ^ 2

Then, we have three rectangles:

rectangle 1:

A2 = (15) * (20)

A2 = 300 cm ^ 2

rectangle 2:

A3 = (12) * (20)

A3 = 240 cm ^ 2

rectangle 3:

A4 = (9) * (20)

A4 = 180 cm ^ 2

The surface area will be:

A = 2A1 + A2 + A3 + A4

A = 2 * (54) + 300 + 240 + 180

A = 828 cm ^ 2

Answer:

The surface area of a rectangular prism is:

A = 828 cm ^ 2