# Find the equation of the circle with centre (0, 2) and radius 2

**Solution:**

The equation of a circle with centre (h, k)

and radius r is given as

(x - h)^{2} + (y - k)^{2} = r^{2}

It is given that centre (h, k) = (0, 2) and radius (r) = 2

Therefore,

the equation of the circle is

(x - 0)^{2} + (y - 2)^{2} = 2^{2}

x^{2} + y^{2} - 4y + 4 = 4

x^{2} + y^{2} - 4y = 0

NCERT Solutions Class 11 Maths Chapter 11 Exercise 11.1 Question 1

## Find the equation of the circle with centre (0, 2) and radius 2

**Summary:**

The equation of the circle is x^{2} + y^{2} - 4y = 0

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