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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
Identify the radius of the circle whose equation is (x - 2)2 + (y - 8)2 = 16.
Solution:
Given: (x - 2)2 + (y - 8)2 = 16
The equation of a circle with center (h, k) and radius (r) is given by,
(x − h)2 + (y − k)2 = r2 ---------------- (1)
(x - 2)2 + (y - 8)2 = (4)2 -------------- (2)
Comparing the values of h, k and r in (1) and (2) we get,
Center (h, k) = (2, 8)
Radius (r) = 4
r = ± 4
Since radius means length, it cannot be negative.
Hence, the radius of the circle is 4
Identify the radius of the circle whose equation is (x - 2)2 + (y - 8)2 = 16.
Summary:
The radius of the circle whose equation is (x - 2)2 + (y - 8)2 = 16 is 4.
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