1. Volume of Rectangular & Triangular Prisms
STAAR Chart Formula V = Bh*
*where B equals the area of the base
Since the base shape of a rectangular prism
is a rectangle, we replace B with the formula
for the area of rectangle which = bh.
Giving us … V = (bh)h

2. Height of V = Bh
1. Figure name
Shape of figure
______________
Rectangular prism
base? V = (bh)h
10 in
4in 3in rectangle V = (4·3)(10)
10 in V = 12·10 = 120 in³

3. 1. Figure name Height of V = Bh
______________ Shape of
cube figure
base? V = (bh)(h)
3 in
3in 3in square V = (3·3)(3)
V = 27 in³
3 in

4. Volume of Triangular Prisms
STAAR Chart Formula V = Bh*
*where B equals the area of the base and h
equals the distance between the bases
Since the base shape of a triangular prism
1
is a triangle, we replace B with bh .
2
1
Specific formula: V bh h
2

5. Height of
1. Figure name
Shape of the figure V = Bh
______________
triangular prism
base?
10 cm V = (½bh)(h)
triangle
V = (½ ·3·4)(10)
V = 6·10 = 60 cm³
4cm
10 cm
3 cm

6. 1. Figure name Height of V = Bh
______________ Shape of
triangular prism figure
base? V = (½ bh)(h)
4m 10 m
triangle V = (½ · 6 · 4)(10)
V = 12 · 10 = 120 m³
10 m
6m