Question

A poster of size 10 cm by 8 cm is pasted on a sheet of cardboard such that there is a margin of of width 1.75 cm along each side of the poster . find the area of margin and cost of cardboard used at the rate of 0.60 per cm2

Answer 1

l = 10 cm
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 cardboad = total area * rate
= 114.5625* 0.60
= 68.737500 rs

Answer 2

Answer:l = 10 cm

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 cardboad = total area * rate

= 114.5625* 0.60

= 68.737500 rs

Step-by-step explanation: