Trapezoid area is 60 square centimeter, height 5 centimeter, bottom 8 centimeter, seek bottom. Equation () - x = 0.8, X ÷ () = 0.02 (so that the solutions of the equation are all 0.1)

Trapezoid area is 60 square centimeter, height 5 centimeter, bottom 8 centimeter, seek bottom. Equation () - x = 0.8, X ÷ () = 0.02 (so that the solutions of the equation are all 0.1)

1. (8 + bottom) X5 / 2 = 60
Bottom = 16cm
2. Directly substituting x = 0.1
Then (0.9) - x = 0.8 and (5) = 0.02

The area of a trapezoid is 1600 square centimeters, the height is 80 centimeters, and the upper bottom is 35 centimeters. How much is the lower bottom

Set the bottom x cm
（35+X）*80/2=1600
40*（35+X）=1600
35+X=40
X=5
Bottom 5 cm

The product of a trapezoid higher than the bottom is 13 square meters and 16.2 square meters respectively. What is the area of this trapezoid?

Because the area of trapezoid = (upper bottom + lower bottom) * height / 2, the area = (upper bottom * height + lower bottom * height) / 2 = (13 + 16.2) / 2 = 14.6 square meters

For a trapezoid, the product of the top, bottom and height is 32 square meters and 48 square meters respectively. How about the area of the trapezoid?

It is equal to (32 + 48) * 0.5 = 40
Area = (upper bottom + lower bottom) * height * 0.5 = (upper bottom * height + lower bottom * height) * 0.5 = 0.5 * (32 + 48) = 40

The area of a trapezoid is 240 square meters, the height is 16 meters, the bottom is twice the top, the bottom of this trapezoid is () meters

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240×2÷16÷（2+1）×2
=20 meters
The bottom of this trapezoid is [20] meters
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The area of a trapezoid is 54 square decimeters. Its bottom is 10 decimeters long and 6 decimeters high. What is the length of the top of the trapezoid

Trapezoid area = (upper bottom + lower bottom) × height △ 2, also equal to median line × height
54 × 2 △ 6-10 = 8 decimeters
Therefore, the top and bottom length of trapezoid is 8 decimeters

The area of a trapezoid is 50 square decimeters, the sum of its top and bottom is 16 meters, and its height is 10 meters______ ．

16 meters = 160 decimeters, 50 × 2 △ 160 = 0.625 (decimeters), so the answer is: 0.625 decimeters

How many square kilometers is the land area in China

About 9.6 million square kilometers

Trapezoidal area of 0.3 square meters, 7 decimeters at the bottom, 4 decimeters high, how many decimeters at the bottom?

Let the bottom be x decimeter (7 + x) × 4 △ 2 = 30 x = 8

The top of trapezoid is 4 decimeters, the bottom is 9 decimeters, the area is 65 square decimeters. What is the height of trapezoid? (solved by equation)

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