Question

a picture is painted on a cardboard which is 8 cm long and 5 cm wide such that there is a margin of 1.5 CM along each of its side find the total area of the margin

Answer 1

area of the cardboard=8*5=40cm2
area of the cardboard with margin=(8+1.5+1.5)*(5+1.5+1.5)=11*8=88cm2
area of margin=88-40=48cm2

Answer 2

Answer:

Area of the margin is 30 centimeter square.

Step-by-step explanation:

Given : A picture is painted on a cardboard which is 8 cm long and 5 cm wide such that there is a margin of 1.5 CM along each of its side.

To find : The total area of the margin?

Solution :

Length (l) of cardboard = 8 cm

Breadth (b) of cardboard = 5 cm

Area of cardboard including margin is

$A= l\timesb = 8\times5 = 40 cm^2$

New length and breadth of the cardboard, when margin is not included, are 5 cm and 2 cm respectively.

Area of the cardboard not including the margin is

$A= l\timesb = 5\times2 = 10 cm^2$

Area of the margin = Area of cardboard including the margin − Area of cardboard not including the margin is

$A=40-10 =30cm^2$