Problema Solution
calculate the equation of a circle with its center at the original and a radius of 7 units
Answer provided by our tutors
The circle whose center is at (h,k) and has a radius r is given by the equation:
(x - h)^2 + (y - k)^2 = r^2
In our case the center is (0, 0) that is h = 0 and k = 0, while the radius r = 7.
Now we can write the equation:
(x - 0)^2 + (y - k)^2 = 7^2
x^2 + y^2 = 49
The equation of the circle is x^2 + y^2 = 49.