Q 4. What is the length of the wooden strip required to frame a photograph of length and breadth 32 cm and 21 cm respectively?
Length and breadth of a photograph is 32 cm and 21 cm respectively.
So, According to question,
Length of wooden strip required to frame the photograph = 2 [L + B]
= 2 [32 + 21] cm
= 2 53 cm = 106 cm
Hence the required length of the strip is 106 cm or 1.06 m