Correct Answer - Option 2 : Rs. 400
Given:
Length of book = 5 m and breadth of book = 4 m
Cost of painting book = Rs. 2/m2
Formula Used:
Area of rectangle = Length × Breadth
Calculation:
Here, area of the one book cover = 5 × 4 = 20 m2
⇒ Area of 10 books cover = 20 × 10 = 200 m2
Cost of painting 10 books cover = 200 × 2 = Rs. 400
∴ The cost of painting 10 books cover is Rs. 400