Question

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Answer 1

eq. of a circle is (x-h)^2+(y-k)^2=r^2
where (h,k) is the centre and r is the radius of the circle.

Answer 2

for bigger circle what is the centre?

Answer 3

0 @surjithayer

Answer 4

it is (0,0)

Answer 5

now what is the radius?

Answer 6

its radius is 6
so eq. is (x-0)^2+(y-0)^2=6^2
or x^2+y^2=36

Answer 7

similarly what is the centre of next circle?

Answer 8

The one on the far right on the x-axis line is (0, 8)

Answer 9

it is (8,0) and radius=?

Answer 10

radius=1

Answer 11

write the eq.

Answer 12

(x-h)^2+(y-k)^2=r^2
(x-0)^2+(y-0)^2=8^2
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Answer 13

x^2+y^2=64

Answer 14

(x-8)^2+(y-0)^2=1^2
x^2-16x+64+y^2=1
x^2+y^2-16x+63=0

Answer 15

similarly for third centre is (8,6) and radius=2
write the equation.

Answer 16

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

(x-8)^2+(y-6)^2=2^2

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Answer 17

@surjithayer