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6 April, 08:45

A rectangular book measures 18 x 9. What is the length of its diagonal?

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Answers (2)
  1. 6 April, 08:46
    0
    A^2 + b^2 = c^2

    18^2 + 9^2 =

    324 + 81 = c^2

    405 = c^2

    take the sq root

    = around 21.12
  2. 6 April, 09:10
    0
    20.1246118 or 20.12

    Step-by-step explanation:

    First draw the box with the diagonal, as you can see it is split into 2 equal right triangles.

    Now use the pythagorean theorem (a^2+b^2=c^2) to find the length of the diagonal
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