Question 1175740
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Hi
 3 rectangles: 12cm by 14cm  
   3(12*14) = 504cm^2

One example of picking an object to cover the three rectangles
would be squares 2cm by 2cm  
(6 across the bottom and 7 rows of them for each rectangle)
 That would take 3(42)  or 126  to cover all three rectangles.

126(4cm^2)  = 504cm^2  checks.
Wish You the Best in your Studies.
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