Isosceles trapezoid

Isosceles trapezoid ABCD, AB||CD is given by |CD| = c = 12 cm, height v = 16 cm and |CAB| = 20°.

Calculate area of the trapezoid.

Correct answer:

S =  703.3542 cm2

Step-by-step explanation:

 tan20=va1 a1=16tan20=43.96 a1=c+x x=a1c=31.96 a=c+2x=2a1c=75.92 cm  S=a+c2v=v2tan20=703.3542 cm2

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