Volume Of Cubes Worksheets With Answer Key Page 7
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How to
• • • Compute the Volumes of Rectangular
Prisms and Cylinders
Facts to Know
Volume of a Rectangular Prism
To determine how much material can fit into an empty rectangular object such as a box or in any other
length = 4 cm
rectangular prism:
1. Measure the length, the width, and the height of
height = 2 cm
the prism.
2. Multiply the length times the width times the
width = 3 cm
height.
3. Record the answer in cubic units.
4. The formula is V = l x w x h or Volume = length x width x height
5. The answer is V = 4 cm x 3 cm x 2 cm = 24 cubic centmeters (or cm
3
)
Cubic Units
1 in.
1 in.
• A cubic foot is 1 foot long, 1 foot
wide, and 1 foot high.
1 in.
• A cubic centimeter is 1 centimeter
long, 1 centimeter wide, and 1
centimeter high.
1 in.
• A cubic inch is 1 inch long, 1 inch
wide, and 1 inch high.
Volume of a Cylinder
r = 4 m
A cylinder is a round tube with two circular, flat faces.
You can compute the volume of a cylinder this way:
1. Multiply the radius times itself and this product
times pi (3.14) to compute the area of the circular face.
2. Multiply this area times the length (or height) of the
cylinder.
3. The formula is V = π(r
2
) x h
4. The answer is V = 3.14 x (4)
2
x 8 = 401.92 cubic meters
(or m
3
).
17
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