It depends on what information you have.
pi(r2) = forumla for the area of a circle
1/2(bh)
I think the forumla is L=25*.95106(72/2)*2
Soap, fish, wolves and Cats + A woman with a STI
Formula: I-
H2S
The formula is CCl4
m/v
Area of a circle = pi*radius2
For a regular diamond shaped kite, the area would be one half the product of the length of the two sticks. So if it was 20 inches and 30 inches the area would be 300 inches square.
If the area of one circle is twice that of another, the ratio of the area of the smaller circle to the larger circle is 1:2. To express this as a percentage, the area of the smaller circle is 50% of the area of the larger circle. Thus, the ratio in percent of the smaller circle to the larger circle is 50%.
Area of a circle = Pi * radius2