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6 March, 23:53

The area of a square garden is 128m sqared. how long is the diagonal

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  1. 7 March, 00:16
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    The length will be the square root of 128. Factoring out a 64, this is 8sqrt (2). To find the diagonal of square, multiply the length by sqrt (2), for a result of 8sqrt (2) * sqrt (2) = 8*2=16.
  2. 7 March, 00:22
    0
    The area of a square is (side) ².

    If the area is 128m², then the side is (√128) meters. (That's 8√2.)

    The diagonal is the hypotenuse of the right triangle you get

    if you slice the square in half along the diagonal. Its length is

    given in the words of Old Pythagoras:

    c² = a² + b²

    'a' and 'b' are sides of the square, so

    c² = (√128) ² + (√128) ²

    = 2 (√128) ²

    c = √ (2 x 128) = √256 = 16 meters.
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