+128475 x^2 + y^2 = 5625
This is a circle centered st the origin with a radius of 75 (miles)
a) To find the x intercepts, let y = 0 and we have
x^2 = 5625 take both roots
x = +75 and x = -75
So....the x intercepts are (-75, 0) and (75, 0)
To find the y intercepts, let x = 0 and we have
y^2 = 5625 take both roots
y = +75 and y = -75
So.....the y intercepts are (0, 75) and (0, - 75)
b) In the form x^2 + y^2 = r^2
The radius = sqrt (r^2) = sqrt (5625) = 75
c) = The area is the area of a circle with a radius of 75....so we have
Area = pi * r^2 = pi (5625) ≈ 17671.45 sq miles
