Question

A picture 30 cm by 24 cm is mounted on the card ,so that there is a margin 3 cm wide all the way round. find the area of margin.​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

length 30 ×3 = 90 cm breadth- 24 ×3 = 72

area of rectangle = length × breadth = 24 × 30 cm = 720 sq cm

area of the card = 90 × 72 = 6480

now area of margin = area of picture - area of card =

6480 - 720 = 5760 sq cm answer

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