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350 paces
130 paces
Dam
FIGURE 2.7
Irregularly shaped pond.
3. Mark the corners of the rectangle (from the drawing) on the ground around the pond and
chain or pace its length and width. For example, a length of 375 paces and a width of 130
paces and a pace length of 2.68 (for example) would be equal to 1005 ft (375 paces × 2.68
ft/pace) by 348.4 ft.
4. Multiply the length times width to get the approximate pond area. For example, 1005 ft ×
348.4 ft = 350,142 ft 2 or 8.04 acres (350,142 ÷ 43,500).
2.11.3.3 Volume
Volume is the amount of space occupied by or contained in an object (see Figure 2.8). It is expressed
in cubic units, such as cubic inches (in. 3 ), cubic feet (ft 3 ), or acre-feet (1 acre-foot = 43,560 ft 3 ). The
volume ( V ) of a rectangular object is obtained by multiplying the length times the width times the
depth or height:
V = L × W × H
(2.9)
where
V = Volume.
L = Length.
W = Width.
H (or D ) = Height (or depth).
EXAMPLE 2.48
Problem: A unit rectangular process basin has a length of 15 ft, width of 7 ft, and depth of 9 ft. What
is the volume of the basin?
W
L
D
FIGURE 2.8
Volu me.
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