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Q:

The diagonal of a square A is (a+b). The diagonal of a square whose area is twice the area of square A, is

  • 1
    2 (a+b)
  • 2
    $${2(a+b)^2}$$
  • 3
    $$\sqrt { 2} \ (a+b)$$
  • 4
    $$\sqrt { 2}\ (a-b)$$
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Answer : 3. "$$\sqrt { 2} \ (a+b)$$"

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