Question

The dimensions of a photographs are 30 cm × 20 cm. What length of wooden frame is needed to frame the picture?

Answer 1

Dimensions of the photograph = 30 cm $\times$ 20 cm
So, the required length of wooden frame = Perimeter of the photograph = 2 (Length + Breadth)
= 2 $\times$ (30 + 20) cm
= 2 $\times$ 50 cm
= 100 cm