how do you work out the area of a triangular prism?

Question

nowhereman · Answer

Multiply the height by the area of the triangle.

anonymous · Answer

so how do you work out the area?

anonymous · Answer

Work out the area of the triangle then multiply this by the length of the prism.
If still not sure, post a copy of the question.

anonymous · Answer

Surface Area = 2b + Ph (b is the area of the base P is the perimeter of the base)

anonymous · Answer

Since it's a triangular prism, you' have to find the area of the triangle (the figure is named after its base).  Area of a triangle is 1/2bh.  The formula multiplies it by 2 because you have two triangular bases on a triangular prism. Surface = 2b + Ph (b is the area of the base P is the perimeter of the base)

anonymous · Answer

Krimson, copy out the question and post it

anonymous · Answer

work out the total surface area of the triangular prism
give units with your answer

anonymous · Answer

Thanks.
The base of the triangle is 8cm and the height is 6cm, the other dimension is not needed.
Area of a triangle is vertical height (6cm) x base (8cm) divided by 2
Area of this triangle is therefore 24cm^2
Now multiply by the length of the prism (12cm)
Answer = 288cm^3