Math Review

Question 1

1 m equals

Answer 1

3.28 feet,39.37 inches

Question 2

1 inch equals x cm

Answer 2

2.54 cm, 25.4 mm

Question 3

1 gallon of water equals how many pounds

Answer 3

8.33 pounds

Question 4

One cubic foot of water equals how many gallons

Answer 4

7.48 gallons

Question 5

1 acre equals how many square feet

Answer 5

43,560 ft.²

Question 6

One square mile equals how many acres

Answer 6

640 acres

Question 7

One cubic foot equals how many cubic inches

Answer 7

1728 in.³

Question 8

One cubic foot of sand equals how many pounds

Answer 8

100 pounds

Question 9

One roofing square equals how many square feet

Answer 9

100 ft.² 

Question 10

Equation for calculating the area of a trapezoid

Answer 10

Length of top plus length of base divided by two (average of top + bottom) times height

Question 11

How much does one cubic foot of water weigh at maximum density? (39.1 F)

Answer 11

64.425 pounds

Question 12

How many gallons in one cubic foot

Answer 12

7.48 gallons

Question 13

How many cubic inches in 1 gallon?

Answer 13

231 in.³

Question 14

What is the column pressure of 1 foot?

Answer 14

0.433 pounds per square inch

Question 15

What is atmospheric pressure at sea level

Answer 15

29.2 inches of mercury, 33.9 feet of water, or 14.7 pounds per square inch

Question 16

One hp equals how many watts

Answer 16

746 W

Question 17

One square mile equals how many square acres

Answer 17

640

Question 18

1 acre equals how many square feet

Answer 18

43,560 ft.²

Question 19

1 m equals how many inches and how many feet

Answer 19

39.37 inches, 3.28 feet

Question 20

One radian equals how many degrees

Answer 20

57.3

Question 21

Formula for calculating board feet

Answer 21

(Thickness (inches) x width (inches) x length (ft)) / 12