It is given in the question that,

Length of table top, l = 2 m 25 cm

= 2 + 0.25 (Because 25 cm = 0.25m)

= 2.25m

Also,

Breadth of the table top, b = 1 m 50 cm

= 1 + 0.50 (Because 50 cm = 0.50m)

= 1.50 m

We know that,

Perimeter of table-top = 2 (l + b)

= 2 (2.25 + 1.50)

= 2 × 3.75

= 7.5 m

Hence, perimeter of table-top is 7.5 m