Question

Find the area of the triangle.
PLEASE HELP ASPA

Answer 1

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

Answer 2

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

$A_{ABC}$ ≈ 12.856 ≈ 12.9 cm²