Question

A picture is painted on a cardboard 8 cm long and 5 cm wide such that the
margin of 1.5 cm along each of its sides. Find the total area of the margin
4. A verondah of width 2.25 m is constructed all along outside a room which is​

Answer 1

area of cardboard = 8×5 = 40cm²

area of picture = (8-1.5)×(5-1.5)

= 6.5×3.5

= 22.75cm²

so, area of margin = 40-22.75

= 17.25cm²