Answer = £15347.06
100 - 19.5 = 80.5
80.5 / 100 = 0.805
19064.67 x 0.805 = £15347.06
Hey.. don’t click on that link or any links on here !!! but i jus wanna say you didn’t attach an image of your question :).
The standard form of the equation of a circle is:

Where the point (a,b) represents the centre and r is the radius. So, given your information, the equation will be: