A'(- 4, 3 )
Under a counterclockwise rotation about the origin of 90°
a point (x, y ) → (- y, x )
A(3, 4 ) → A'(- 4, 3 )
Answer: 62
Step-by-step explanation:
(8cm×5cm)+(1/2×5×5)cm^2
=40cm^2+12.5cm^2
=52.5cm^2