Question

A picture is painted on a cardboard 7 cm long and 6 cm wide such that there is a margin of 1.5 cm along each of its sides. Find the total area of the margin.

Answer 1

answer is 30cmsq

Step-by-step explanation:

length of card l=7cm

length of card b=6cm

are of card b

l×b

7×6

42cmsq

length of picture

7-1.5-1.5

4cm

breath of picture

6-1.5-1.5

3cm

area of picture

l×b

4×3

12cmsq

area of margin

42-12

30cmsq