spreadlight10 spreadlight10

06-11-2018
Mathematics

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I NEED HELP QUICK! 20 POINTS!

2. If PQ = 21 cm and QR = 5 cm, then what are the possible lengths for PR so that can form a triangle?

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jaredselbe jaredselbe

06-11-2018

For this you just need to use the Pythagorean theorem.

a^2 + b^2 = c^2

5^2 + 21^2 = c^2

25 + 441 = 446

√446 = 22.1187 ~~ 22.12

PR = 22.12cm

Hoped this helped!

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