# Thread: Circle area and circumference

1. ## Circle area and circumference

Assuming X=360, is it possible to find the area and circumference of the circle? And, if so, how?

TIA!

2. Hi there, I don't think it is possible to find the measurements you require.

On the condition that the triangle with hypotenuse X had shorter sides that were equal then maybe it would be.

Therefore if x = 360 units in length then the radius is 246.6

Circumerence is $\displaystyle 2\pi\times r = 2\pi\times 246.6 \approx 1549$ units

Area is $\displaystyle \pi\times r^2 = \pi\times 246.6^2 \approx 190948$ units squared

How, using pythagora's theorem.

3. Originally Posted by quickquestion
Assuming X=360, is it possible to find the area and circumference of the circle? And, if so, how?

TIA!
Hi quickquestion,
The solution is fairly simple...
look at the bounding rectangle you have around X
The other diagonal is equal to the radius and also equal to X
Therefore the Radius is equal to X.

Circumference = 2*pi*X = 2 * 3.14 * 360 = 2261.9
Area = pi * X * X = 3.14 * 360 * 360 = 407150.4