Question

a poster of size 20 cm by 16 cm is pasted on a sheet of cardboard such that there is margin of 3.5 cm long
what is total area of margin
what is coast of cardboard used at rate of rs 1.20 per cm 2​

Answer 1

solv..

length of poster=20cm

breadth of poster=16cm

3.5 cm margin on each side means therefore

length of cardboard=20+3.5+3.5=27cm

breath of cardboard=16+3.5+3.5=23cm

Area of cardboard = l×b

= 27×23

Area=621cm^2

and

cost = 621×1.20

=₹745.2