Find the volume of the triangular prism. a) 4 m3 b) 8 m3 c) 12 m3 d) 20 m3

First step is to find the area of the triangle on the end:

area of a triangle =  1/2 x base x height:

base = 4m and height  = 2m

area =  1/2 x 4 x 2 = 4 square meters

now for volume multiply the are of the triangle by the depth which is 5m

volume = 4 x 5 = 20 cubic meters
 the answer is D

(1/x + 1)^2 + 6 (1/x + 1) +5