how do you find the circumfernce of a circle
here is everithing you need http://www.mathgoodies.com/lessons/vol2/circle_area.html
Where d is the diameter, it is \[d \pi ^{2}\] For example, if the diameter was five, it would be \[5\times \pi ^{2}\]
Example 1: The radius of a circle is 3 inches. What is the area? diagram for example 1 Solution: Area equals Pi times r times r Area = 3.14 · (3 in) · (3 in) Area = 3.14 · (9 in2) Area = 28.26 in2
so if d= 14 then you have to do 49 times pi?
Look at this example and you will understand The diameter of a circle is 8 centimeters. What is the area? diagram for example 2 diameter formula 8 cm = 2 · radius 8 cm ÷ 2 = radius radius = 4 cm Area equals Pi times r times r Area = 3.14 · (4 cm) · (4 cm) Area = 50.24 cm2
He's asking for circumference. Not for area, sir.
The area of a circle is the number of square units inside that circle. If each square in the circle to the left has an area of 1 cm2, you could count the total number of squares to get the area of this circle. Thus, if there were a total of 28.26 squares, the area of this circle would be 28.26 cm2
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