• # question_answer 3) A table-top measures 2 m 25 cm by 1 m 50 cm. What is the perimeter of the table-top? TIPS Firstly, change all the units in same unit and then find perimeter by using 2 (length + breadth),

Given, length of table-top = 2 m 25 cm $=2m+25\times \frac{1}{100}m$ $[\because 1cm=\frac{1}{100}m]$ $=2m+\frac{25}{100}m=2m+0.25m$ $=(2+0.25)m=2.25m$ Breadth of table-top $=1\,\,m\,\,50\,\,cm=1\,\,m+50\,\,cm$ $=1m+50\times \frac{1}{100}m$ $[\because 1cm=\frac{1}{100}m]$ $=1m+\frac{50}{100}m=1m+0.50m$ $=(1+0.50)m=1.50m$ $\therefore$Perimeter of table top $=2\times$ (Length + Breadth) $=2\times (2.25\text{ }m+1.50\,m)=2\times 3.75m=7.50m$ Hence, the perimeter of the table- top is 7.50 m.