Question

Quick help=Medal :D

Answer 1

@lall @rational @iGreen

Answer 2

eqn. of circle
\[(x-h)^{2}-(y-h)^{2}=r ^{2}\]

Answer 3

are you able to see the eqn. here it says math processing error

Answer 4

yes

Answer 5

centre is(h,k)=(0,-5)
rad=sq. root( 50)=5root2

Answer 6

A

Answer 7

25-???? =7.07

Answer 8

17.93