Volume Of Cubes Worksheets With Answer Key Page 12
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How to
• • • • • • • • • • • Find the Volumes of Solids
Facts to Know
Plane geometry involves measuring flat or two-dimensional figures. Solid geometry is measuring
figures with three, instead of two, dimensions—length, width, and height.
r
h
h
h
w
w
l
l
One way to measure how much an object can hold is to measure its volume. The unit used to measure
volume is a cube. The cube may be 1 cm on each side (a cubic centimeter), 1 in. on each side (a cubic
inch), 1 ft. on each side (a cubic foot), etc.
Imagine that each one of the small squares is a
cubic inch. Adding them all up would give
you the volume in cubic inches of this cube.
Finding the Volume of Rectangular Solids
To find the volume of a rectangular solid, use the formula Volume = l (length) x w (width) x h (height)
or V = lwh. So volume is simply the area of the base rectangle times the height.
Here’s an example:
4"
Step 1: Put the numbers in the formula, V = lwh.
7"
Step 1:
V = 10 x 4 x 7
Step 2: Multiply the numbers.
Step 1:
V = 40 x 7
V = 280 cubic inches or 280 in.
3
Step 1:
10"
38
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