29-12-2020
Mathematics

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Find the area of the triangle.
PLEASE HELP ASPA

Find the area of the triangle PLEASE HELP ASPA class=

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29-12-2020

1/2abSinC
1/2*8*5*sin(140)=12.9cm
* means multiply

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29-12-2020

Answer:

(B). 12.9 cm²

Step-by-step explanation:

a = 8 cm , b = 5 cm , c ≈ 12.259 cm

P = 25.259 , s = P/2 ≈ 12.63

[tex]A_{ABC}[/tex] ≈ 12.856 ≈ 12.9 cm²

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