A trapezoid has parallel sides of 5 m and 8 m, and a height of 4 m. Find the area. Power Engineering A trapezoid has parallel sides of 5 m and 8 m, and a height of 4 m. Find the area. A. 17 m² B. 21 m² C. 26 m² D. 30 m² E. 36 m² Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+