1
3. Find the centre of the circle if (3, 2) and (-5, 6) are the end points of a diameter of the
circle.
4. If distance b/w the points (4, p) and (1, 0) is 5 units then find p?
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Answer:
3. {3+(-5)}/2= -1
(2+6)/2 = 4
centre of circle wil be on (-1 ,4)
4.distance formula =√(x2-x1)² +(y2-y1)²
5 = √(1 - 4)² +(0 - p)²
5 = √(-3)² +(-p)²
5 = √9 + p²
squaring both sides,
(5)² = (√9 + p²)²
25 = 9 + p²
p² = 16
p = 16
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