Trapezoid - legs

Determine the trapezoid area with bases 84 and 47; the height is 4 shorter than its leg.

Final Answer:

S =  2671.17

Step-by-step explanation:

a=84 c=47 Δ=4  h=rΔ r2=h2+((ac)/2)2 h2+2h Δ + Δ2 = h2 + ((ac)/2)2 2h Δ + Δ2 = ((ac)/2)2  h=2 Δ(ac)2/4Δ2=2 4(8447)2/442=321305=40322540.7813  S=2a+c h=284+47 40.7813=2671.17



Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
See also our right triangle calculator.
See also our trigonometric triangle calculator.

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions: