formulas

GURU.

Calculating the Perimeter of a Square

The perimeter of a square is the distance around the outside of the square. A square has four sides of equal length. The formula for finding the perimeter of a square is 4*(Length of a Side).

Calculating the Perimeter of a Rectangle

The perimeter of a rectangle is the distance around the outside of the rectangle. A rectangle has four sides with opposite sides being congruent. The formula for finding the perimeter is Side A + Side B + Side A + Side B. This could also be stated as 2*Side A + 2*Side B or 2*(Side A + Side B)

Calculating the Perimeter of a Parallelogram
The perimeter of a parallelogram is the distance around the outside of the parallelogram. A parallelogram has four sides with opposite sides being congruent. The formula for finding the perimeter is Side A + Side B + Side A + Side B. This could also be stated as 2*Side A + 2*Side B or 2*(Side A + Side B).

Calculating the Circumference of a Circle

The circumference of a circle is the distance around the outside of the circle. It could be called the perimeter of the circle.

How to find the circumference of a circle:

• The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.
• If a circle has a diameter of 4, its circumference is 3.14*4=12.56
• If you know the radius, the diameter is twice as large

Length

1 inch 2.540 centimeters

1 foot 30.48 centimeters

1 mile 1.609 kilometers

1 centimeter 0.3937 inches

1 meter 39.37 inches or 100 centimeters

1 kilometer 0.6214 miles or 1000 meters

Area

1 square mile 640 acres

1 acre 43.560 feet squared

1 square meter 10.76 feet squared

1 square foot 929 centimeters squared

Volume

1 US Gallon 3.785 litres

1 British Gallon 1.201 US gallon

1 US Quart .946 litre

Speed

1 Mile per hour 1.609 Kilometer per hour

1 Kilometer per hour .62 Miles per hour

Temperature

Sea Level 32 Degrees Fahrenheit

0 Degrees Celsius (Freezing Point)

212 Degrees Farenheit

100 Degrees Celsius (Boiling Point)

Weight

1 Pound .453 Kilogram,

16 ounces, 453 grams

1 Ounce 28 grams

1 Kilogram 2.2 pounds