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EastWind [94]
3 years ago
6

What’s the area of this?

Mathematics
1 answer:
Fed [463]3 years ago
6 0

Answer:

25.5

Step-by-step explanation:

A_{t} = \frac{1}{2} * (6 + 3) * (5 + 2) = 31.5\\\\A_{r} = 2 * 3 = 6\\\\A = A_{t} - A_{r} = 31.5 - 6 = 25.5

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svp [43]
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Can atriangle be formed with side lengths of 5cm. 10cm and 15cm
andreyandreev [35.5K]
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In this case:
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cos α=-(15²-10²-5²) / 2*10*5
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