SELECT * FROM question_mgmt as q WHERE id=1200 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=6 AND chapterId=82 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th mathematics Conic Secrtions find the equation of the circle with centre ndas

Question:

Find the equation of the circle with centre (–2, 3) and radius 4

Answer:

The equation of a circle with centre (h, k) and radius r is given as

(x­ – h)2 + (y ­– k)2 = r2

It is given that centre (h, k) = (–2, 3) and radius (r) = 4.

Therefore, the equation of the circle is

(x + 2)2 + (y – 3)2 = (4)2

x2 + 4x + 4 + y2 – 6y + 9 = 16

x2 + y2 + 4x – 6y – 3 = 0


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