So if I remember correctly if it’s against the y-axis and u are trying to make a reflection, then it would be an arrow notation which is (y,-x) and do you would change A,B,C, and D coordinates into the arrow notaton
A= πr^2 A is 204 so 204= πr^2 Make are R the subject and the answer of the radius will be 8.06. The equation for circumference is 2 πr and now we have R so just substitute it into the equation and the answer is 50.63
