Question

10. 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 each side of the poster. Find (i) the total area of the margin (ii)the cost of the cardboard used at the rate of Re 0.60 per cm2.​

Answer 1

Answer:

L = 10cm

B=8cm

L= 10+1.75=11.75.

B=8+1.75=9.75

area of margin = total area - area of poster

= 11.75 * 9.75=10*8

114.5625-80

= 34.5625 sq cm.

rate of cardboard= 0.60 per sq cm

cost of cardboard = total area*rate

=114.5625*0.60

= 68.737500 rs .