Center is (h,k) and point E is (x,y) . We have to find the length of the legs which are used to derive the standard formula of circle .
The length base of the right triangle is (x-h) units.And the length of the right triangle is (y-k) units .
And that's the required lengths of the legs.
Therefore correct options are fourth and last options .
Simply add 25% to 100% and you will get 125%
125% should be decreased to restore the original price
Example: $80 x .25 = $20
$20 + $80 = $100
$100 ÷ 125% = 80
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