Environmental Engineering Reference
In-Depth Information
31. If 9
x
+ 1 = 0, what is the value of
x
?
32. How much is
x
2
if
x
= 6?
33. If
x
= 3, what is the value of
x
4
?
34. If
x
= 10, what is the value of
x
0
?
r
atio
and
p
roportion
35. If an employee was out sick on 6 of 96 workdays, what is that employee's
ratio of sick days to days worked?
36. Find
x
when 2:
x
= 5:15
a
rea
of
r
eCtangles
37. What is the area of a rectangle 3 ft long by 3 ft wide?
38. What is the area of a rectangle 5 in. long by 3 in. wide?
39. What is the area of a rectangle 5 yd long by 1 yd wide?
C
irCuMferenCe
and
a
rea
of
C
irCles
40. Find the circumference of a circle whose diameter is 14 ft.
41. If the circumference of a circle is 8 in., what is the diameter?
42. If the radius of a circle is 7 in., what is its area?
43. If the diameter of a circle is 10 in., what is its area?
FUNDAMENTAL WATER/WASTEWATER OPERATIONS
t
anK
v
oluMe
C
alCulations
1. The diameter of a tank is 70 ft. If the water depth is 25 ft, what is the vol-
ume of water in the tank in gallons?
2. A tank is 60 ft in length, 20 ft wide, and 10 ft deep. Calculate the volume of
the tank in cubic feet.
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