As shown in the figure, the area of a trapezoid is 4 / 3 square meters, and how many square meters is the area of the shadow part A trapezoid with 5 meters at the top and 8 meters at the bottom

As shown in the figure, the area of a trapezoid is 4 / 3 square meters, and how many square meters is the area of the shadow part A trapezoid with 5 meters at the top and 8 meters at the bottom


Trapezoid area = (upper bottom + lower bottom) × height △ 2
=(5 + 8) × height △ 2
=13 × h △ 2
= 4/3
Therefore, height = 4 / 3 × 2 △ 13 = 8 / 39 (m)
Shadow area = bottom × height △ 2
= 8×8/39÷2
=32 / 39 (M2)