# Metric

Convert Pounds (lb) to Milligrams (mg) using this conversion calculator for metric weight conversions. 1 Pound = 453592 Milligrams. The formula to convert pounds to grams is to multiply by 453592.

Convert Inches (in) to Centimeters (cm) using this conversion calculator. 1 inch is equal to 2.54 centimeters. If you need to know how to convert inches to centimeters, multiply inches by 2.54.

Convert Centimeters (cm) to Inches (in) using this conversion calculator. 1 centimeter is equal to 0.393701 inches. If you need to know how to convert centimeters to inches, multiply centimeters by 0.393701.

To calculate the area of a circle, use the following formula:
Let's say our circle is 8 inches in diameter. Half of the circle's diameter equals it's radius (8 / 2 = 4). Square the radius (4 * 4 = 16). Multiply that by pi 3.1416 (16 * 3.1416 = 50...

To calculate the area of a Rectangle, use the following formula:
multiply the width with the height (width * height)

To calculate the area of a Parallelogram, use the following formula:
multiply the width with the height (width * height)

To calculate the area of a triangle:
multiply the base with the height (base * height)
divide the result in half ((base * height) / 2)

To calculate the area of a trapezium, which is essentially a rectangle with triangles on either side:
add together the top and bottom (top + bottom)
multiply the result with the height ((top + bottom) * height)
divide the result in half ((top...

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