Question

10. A painting 40 cm long and 28 cm wide is painted on a card board such that there is a margin of 2 cm along each of
its sides. Find the total area of the ​

Answer 1

Answer:

864cm ^2

Step-by-step explanation:

given- length = 40 cm

breadth=28cm

width of margin =2 cm

therefore , length of internal rectangle =40-(2+2)= 40-4

= 36cm

breadth = 28-(2+2)= 28-4 = 24cm

therefore area =36×24 =864cm^2

Answer 2

Answer:

Length of the painting is 40 cm

Breadth of the painting is 28cm

Area of the painting is 40×28=1120 cm²

Margin is drawn on every side of 2 cm

New length=40+2+2=44

New breadth =28+2+2=32

Area=44×32=1408cm²

Area of border=1408-1120=228cm²