volume of the triangular prism = base area x height
the base in the shape of a triangle
area of a triangle = 1/2 x base x height
1/2 x 12 x 10.4 = 62.4 in²
volume = 62.4 x 19 = 1185.6 in
the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero
