Step-by-step explanation:
hope it's helpful.........
 
        
             
        
        
        
Answer:
1209
Step-by-step explanation:
hope this helps you!!
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You have two given data available here: the actual height of the Empire State Building measuring 1,450 feet, and the height of the block measuring 2 feet. To find how many blocks stacked together would make up 1,450 feet, just divide 1,450 by 2.
Number of blocks=1,450 feet * (1 block/2 feet)
Number of blocks = 725 blocks
Therefore, you would use a model  requiring 725 blocks. The scale factor for the model is 1 block per two feet. 
        
                    
             
        
        
        
Answer:
56cm²
Explanation:
the amount of material he needs would be the total surface area of the box. surface area can be calculated by finding the sum of surface area of all the sides of the box. since the opposite sides are equal, we can find the surface area of 3 different sides and then multiply it by 2.
(4 + 4) + (4 + 6) + (6 + 4) × 2
= 8 + 10 + 10 × 2
= 28 × 2
= <u>56cm²</u>
i hope this helps! :D