Originally Posted by

**Mariolee** Hello, I do not understand this geometry question about toal sruface area. I think the answer they gave me is wrong.:

25. The net of a right triangular prism is shown below. Use the ruler on the Mathematics Chart to measure the dimensions of the right triangular prism to the nearest centimeter.

Which is closest to the total surface area of this right triangular prism?

A 18 cm^2

B 60 cm^2

C 48 cm^2

D 36 cm^2

The answer is C. I keep getting around 33 so, I'm not sure what I'm doing wrong here. How do you find the total surface area of this?