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3 years ago

From triangle PQR is P = 90°, PQ = 15.5 dm and PR = 11,7 dm. Calculate QR in dm. Round to one decimal.

Mathematics

1 answer:

Irina18 [472]3 years ago

4 0

Answer:

QR = 19.4

Step-by-step explanation:

Use Pythagoras because p = 90°

Qr is hypotenuse

; (15.5)² + (11.7)²

= 377.14

√377.14

= 19.42009

= 19.42

= 19.4

hope it helps ☺️

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Answer:

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There are two best ways to solve this.

using cosine method:

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2 years ago

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Answer:

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