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Question

The area of a square tile is 324 square units. What is the length of each side of the tile?


  1. 17 units

  2. 16 units

  3. 22 units

  4. 18 units


Solution

The correct option is D

18 units


The area of a square with side a = a2
 a2 = 324a = 324 =18 units
a = 22×2×3×3×3×3 
    =2×3×3
    =18 units

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