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MArishka [77]
2 years ago
14

Find the area of the triangle.

Mathematics
2 answers:
Klio2033 [76]2 years ago
8 0

Answer:

<em>(D). 5 km²</em>

Step-by-step explanation:

QR² = 11² + 14² - 2(11)(14)cos77°

QR ≈ 15.739 km

P = 14 + 11 + 15.739 = 40.739 km

s = \frac{P}{2} ≈ 20.37 km

A_{PQR} = \sqrt{20.37(20.37-11)(20.37-14)(20.37-15.739)} ≈ <em>75 km²</em>

tiny-mole [99]2 years ago
4 0
The answer is B
The answer is B
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Just need to check these answers
amid [387]
Great Job! they are all correct.  :)


Good luck in your next tests.
3 0
3 years ago
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