The area of a plane shape is the measurement on a 2-dimensional plane. The area of the triangle is 110.124 [tex]cm^{2}[/tex].
A triangle is a plane shape that has not more than three sides and three angles. The sum of the internal angle of a triangle is [tex]180^{o}[/tex].
In the given question, the area of the given triangle can be determined by;
Area = [tex]\frac{1}{2}[/tex] ac SinB
Where: a = 12 cm, c = 19 cm and B = 105°.
Therefore,
Area of the triangle = [tex]\frac{1}{2}[/tex] x 12 x 19 x Sin 105°
= 6 x 19 x 0.9660
Area of the triangle = 110.124 [tex]cm^{2}[/tex]
The area of the given triangle is 110.124 [tex]cm^{2}[/tex].
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