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

User Surbhi Vyas
by
7.6k points

1 Answer

3 votes
a^2 + b^2 = c^2

18^2 + 9^2 =

324 + 81 = c^2

405 = c^2

take the sq root

= around 21.12
User Ardeshir Ojan
by
7.8k points
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