A rectangular sheet of paper is 12 1/2 cm long and 10 2/3 cm wide.

Find its perimeter.

Length = 12 1/2 cm = 25/2 cm

Breadth = 10 2/3 cm = 32/3 cm

Perimeter = 2 × (Length + Breadth)

= 2 × [ 25/2 + 32/3 ] = 2 × [ (25 × 3) + (32 × 2) 6 ] = 2 × [ 75 + 64/6 ]

= 2 × 139/6 = 139/3 = 46 1/3 cm