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miss Akunina [59]

3 years ago

9

Daniel rides his bicycle 21km west and then 18km north. How far is he from his starting point?

1 answer:

insens350 [35]3 years ago

6 0

This is a right triangle. To find the length of the hypotenuse a^2 + b^2 = c^2.

21^2 + 18^2 = c^2

441 + 324 = c^2

765 = c^2

27.66 km

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