The area of a trapezoid is 8.4 square centimeters, the height is 2.8 centimeters, the length of the bottom is three times that of the top, and the length of the bottom is ()

Bottom + top = 8.4 × 2 △ 2.8 = 6cm
Top and bottom = 6 ÷ (1 + 3) = 1.5cm
Bottom = 1.5 × 3 = 4.5cm

The area of a trapezoid is 3.44cm2, its upper bottom is 1.5cm, and its lower bottom is 2.8cm?

4.3 = 1.6 cm. A: the height is 1.6 cm

As shown in the figure, cut out a triangle in a trapezoid, what is the area of the remaining partial shadow in square centimeter

First find out the area of a trapezoid, then subtract the area of a triangle from the area of trapezoid

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