The answer is that CG is equal to 13cm. As given that DG, EG, and FG are perpendicular bisectors of the sides of triangle ABC and it shows that G is the point of intersection and also it is the circumcenter of the triangle, So; AG = BG = CG By Pythagorean theorem BG² = DG² + BD²BG² And DG = 5cm and BD = 12cm So, BG = √(DG² + BD²) = √(5² + 12²) = √(25 + 144) = √169 = 13 BG = 13 = AG = CG Thus, CG = 13cm
The smallest number of pencils and erasers and 1 eraser per pencil so number of pencils and erasers are equal *GCD( 12;10) = 60 So Philip buy 60÷12=5 packages of erasers 60÷10=6 packaes of pencils