Question

a poster of size 10 cm by 8 cm is pasted on a sheet of cardboard such that there is a margin of width 1.75 CM along side of the poster find (1) the total areA of the margin (2) the cost of the cardboard used at the rate re 0.60 per cm2

Answer 1

If there is a margin of 1.75 cm then dimensions of the cardboard must be
l*b=(10+1.75(2))*(8+1.75(2))
=13.5+11.5

A) area of margin=area of cardboard - area of poster
=155.25-80
=75.25cm^2

B) rate of cardboard =155.25x0.60
=RS. 9315