Uncle Li uses a wall, as shown in the figure below, with 20 meters long rope, surrounded into a trapezoid, the trapezoid area is how many square meters?

(20-8) × 8 / 2 = 12 × 8 / 2, = 96 / 2, = 48 (square meters). A: the area of this trapezoid is 48 square meters

With 60 meters long fence, one side against the wall around a trapezoid, trapezoid area

You don't give enough. You know that the fence is 60m long. You don't know which side the wall is, or what kind of trapezoid the siege is You can't use 20m high

A trapezoidal bamboo fence surrounded by a wall, the total length of the fence is 60 meters, how many square meters is the trapezoidal area?

The maximum area of the trapezoid is:
(20 + 40) × (10 √ 3) △ 2 = 300 √ 3 = 519.6 (M2)

The area of a trapezoid is 20 square meters. If its upper bottom, lower bottom and height are expanded twice, its area is 20 square meters______ Square meters

20 × 2 × 2 = 80 square meters. A: its area is 80 square meters

The area of an isosceles trapezoid is 20 square decimeters, the height is 4 meters, the upper bottom is 3 meters, how long is the upper bottom of the coin?
Wrong number. It's not the currency. It's Bi!

The area of isosceles trapezoid is 20 square decimeters? It should be square meters
The height is 4 meters and the top and bottom are 3 meters
S = (3 + bottom) * 4 △ 2 = 20
The bottom is 7
The bottom is 4 meters longer than the top

An isosceles trapezoid has an area of 20 square meters, a height of 4 meters, a bottom of 3 meters and a top of 3 meters M. what is the area of a triangle equal to its base and height Square centimeter

20 × 2 △ 4-3, = 40 △ 4-3, = 10-3, = 7 (m); the area of the triangle with the same bottom is 3 × 4 △ 2 = 6 (M2) = 60000 square cm; the area of the triangle with the same upper bottom is 7 × 4 △ 2 = 14 (M2) = 140000 square cm; a: the area of the triangle with the same bottom and height is 7 M

The area of an isosceles trapezoid is 20 square meters, the height is 8 meters, the bottom is 3 meters, the top is 3 meters, how many meters shorter is the top than the bottom?
I'll give you all the points~

If you delete it, the analysis is as follows:
According to the trapezoidal area formula
20 × 2 / 8 = 5m Top and bottom
5-3 = 2m Top and bottom
3-2 = 1m The top bottom is one meter shorter than the bottom

The sum of the top and bottom of a trapezoid is 20 meters, which is four times as high. How many square meters is the area of this trapezoid?

20 △ 4 = 5m
20×5÷2
=100÷2
=50 square meters

An isosceles trapezoid has an area of 20 square meters, a height of four meters, a bottom of three meters, and a top of several meters. How many square meters is the area of a triangle with the same height as its bottom and the same bottom?

The upper bottom of trapezoid = area × 2 △ height - lower bottom
=20×2÷4-3
=10-3
=7 (m)
What is the area of a triangle
7 × 4 △ 2 = 14 (M2)

The area of the trapezoid is 740 square meters, and the upper bottom is 38 meters. How many meters is the lower bottom of the trapezoid?

740 * 2 = 1480m 1480 / 20 = 74m 74-38 = 36m bottom 36m

Uncle Li uses a wall, as shown in the figure below, with 20 meters long rope, surrounded into a trapezoid, the trapezoid area is how many square meters?