Answer:
700 cm^2
Explanation:
The area of the picture + frame = L * W
Area = 50 * 30
Area = 1500
=====================
Area of inside area
- L = 50 - 10 = 40 (Remember both ends have to be shortened)
- W = 30 - 10 = 20 ( Remember again both ends have to be shortened)
Area = L * W
Area = 40 * 20
Area = 800
======================
Now the frame is going to take up the difference.
Area Frame = Entirie area - inside area
Area Frame = 1500 - 800
Area Frame = 700