Trapezoid

Trapezoid ABCD a = 35 m, b=28 m c = 11 m and d = 14 m. How to calculate its area?

Final Answer:

S =  321.9487 cm2

Step-by-step explanation:

a=35 cm b=28 cm d=14 cm c=11 cm h>0  d2=x2+h2 b2 = y2+h2 c = a−x−y  142=x2+h2 282 = y2+h2 c = 35−x−y  x=−1/4=−41​=−0.25 cm y=97/4=497​=24.25 cm c=a−x−y=35−(−0.25)−24.25=11 cm  h=d2−x2​=142−(−0.25)2​≐13.9978 cm  S=(a+c)⋅ h/2=(35+11)⋅ 13.9978/2=321.9487 cm2

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Showing 1 comment:
Evan
How did you come up with x = -0.25 and y = 24.25?





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