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Find the square of 689 by using the diag...

Find the square of 689 by using the diagonal method.

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The correct Answer is:
`therefore (689)^(2) = 474721`
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Knowledge Check

  • Find the square root of 784 by the long-division method.

    A
    `38`
    B
    `28`
    C
    `48`
    D
    `58`
  • Find the squares of the following numbers using the column method. Verify your result by finding the square using the usual method.

    A
    26
    B
    33
    C
    45
    D
    84
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