Area of a sector calculator
Instructions for using this area of a sector calculator
The calculator is not hard to use. If you are not sure what a sector is, study my lesson about sector in the geometry section of the website
Enter the length of the radius of the circle
Enter the measure of the angle between the radii
Then click on the button that says calculate
Do not enter numbers with a slash (/)! If you do, the wrong answer will be computed
Therefore, convert all fractions into decimals before entering numbers
Enter all numbers without the unit. For example, if r = 5 cm, enter 5.
For the angle, enter a positive number smaller or equal to 360
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Oct 15, 18 11:05 AM
why the rule of 72 works- math explanation of where the 72 came from.
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