An isosceles trapezoid, the sum of the top and bottom is 14.5 cm, waist length is 6.8 cm, how many cm is his circumference?

Perimeter = 14.5 + 6.8 * 2 = 14.5 + 13.6 = 28.1cm

An isosceles trapezoid, the sum of the top and bottom is 14.5 cm, waist length is 6.8 cm, how many cm? How many meters?

I know the upper and lower ends, the waist length, and the circumference. Circumference C = 14.5 + 6.8 * 2 = 28.1cm = 0.281m

Area of trapezoid = () Z is ()

Area of trapezoid = (upper bottom + lower bottom) × height △ 2
The letter means (a + b) × h △ 2

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