Answer:
To find the volume of this, we must find the area of the triangle and multiply it by the width of this prism.
Formula for area of triangle;
A = BH x 1/2
Replace values;
A = BH x 1/2
A = 3(4) x 1/2
A = 12 x 1/2
A = 12/2
A = 6, is the area of the triangle.
Now multiply it by the width:-
6(area of triangle) x 7(width)
= 42 cm3