First add the bases. Base 1 (top) . 4 + 15 + 6 = 25. Base 2(bottom) 15. 25 + 15 =40.
Next divide by 2 40 ÷ 2 = 20.
Last. Multiply by height. The height of this trapezoid is 7in because the height must be perpendicular to the base. (NOT the SLANTED LINE) 20 x 7 = 140. Don't forget the Units of measure! Because this is area 140 in. = 140²
