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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