Magnesium makes up 1/400 of the human body
Answer:
r = 45
A = 6361.7
Step-by-step explanation:
x^2 + y^2 = 2025
this is a circle
root 2025 will give the radius
root 2025 = 45
pi * 2025 will give the area
A = 6361.7
The formula to find the area of a circle is A =
![\pi \times {r}^{2}](https://tex.z-dn.net/?f=%5Cpi%20%5Ctimes%20%20%7Br%7D%5E%7B2%7D%20)
We can follow this formula to find the area of a circle.
Area of the circle:
153.94
(Approximate)