The sum of the top and bottom of a trapezoidal orchard is 160 meters, and its height is 45 meters. The area of this orchard is 160 meters______ If you plant a fruit tree for every 8 square meters, the orchard can grow fruit trees______ A tree

The sum of the top and bottom of a trapezoidal orchard is 160 meters, and its height is 45 meters. The area of this orchard is 160 meters______ If you plant a fruit tree for every 8 square meters, the orchard can grow fruit trees______ A tree

160 × 45 △ 2, = 7200 △ 2, = 3600 (square meters), 3600 △ 8 = 450 (trees). Answer: the area of this orchard is 3600 square meters, and 450 fruit trees can be planted in this orchard. So the answer is: 3600; 450

A trapezoidal field is 10 meters long at the top, 32 meters long at the bottom, and 3 meters long. Draw a triangle to grow vegetables. What is the area of vegetables

It can be seen from the meaning of the title:
When the bottom is the bottom, the triangle area is the largest
So s = 32 × 15.3 △ 2 = 244.8 square meters
If satisfied, please accept, thank you!

A trapezoid, the upper bottom is 68 meters, the lower bottom is 112 meters, and the height is 45 meters. Grain and vegetables are planted on this land. The area of grain land is twice that of vegetable land. How many square meters is the area of grain land?

Suppose the area of vegetable field is x, then the area of grain field is 2x, x + 2x = (68 + 112) × 45 △ 2 & nbsp; & nbsp; 3x = 4050, & nbsp; & nbsp; X = 1350, 2 × 1350 = 2700 (square meters). A: the area of grain field is 2700 square meters

The area of a trapezoid is 54 square meters, the upper bottom is 8 meters, the lower bottom is 10 meters, how many meters high

S ladder = (upper bottom a + lower bottom b) × height h △ 2
∴h=2s/(a+b)
=54*2/(8+10)
=108/18
=6

The cross section of a barrage is trapezoid. The area of this trapezoid is 168 square meters. Its upper part is 16 meters and its lower part is 24 meters

Height: 168 × 2 ^ (16 + 24)
=168×2÷40
=336÷40
=8.4m

The dam is 20 meters long with trapezoidal cross section, 3 meters long at the top and 5 meters long at the bottom. How many cubic meters of soil are needed to build the dam?

(3 + 5) * 2 / 2 * 20 = 160m3

To build a 6 km long embankment, the cross-sectional area of the embankment is trapezoidal, with the upper bottom width of 5 meters, the lower bottom width of 16 meters and the height of 4 meters
】How many times do I need to transport my car to repair the dam

Hello
6 km = 6000 m
Cross sectional area = (5 + 16) × 4 △ 2 = 42 (M2)
Dam volume = 42 × 6000 = 252000 (M3)
Soil weight = 252000 × 3 = 756000 (T)
Required transportation = 756000 △ 8 = 94500 (Times)

The cross section of the dam is trapezoidal, the upper bottom is 5.6 meters, the lower bottom is 2.8 meters more than the upper bottom, and the height is 1.8 meters. What is the cross-sectional area of the dam

Bottom = 5.6 + 2.8 = 8.4
Sectional area = (5.6 + 8.4) * 1.8/2 = 12.6

The cross section of a dam is trapezoidal, the upper bottom is 6 meters shorter than the lower bottom, and the lower bottom is 24 meters, twice as high. Its cross section area is () square meters
Urgent --

Top and bottom = 24-6 = 18m
Height = 24 △ 2 = 12m
Cross section = (24 + 18) × 12 × 1 / 2 = 252m2

There is a trapezoidal dam with a cross-sectional area of 76.5 hectares. Its height is 90 meters and its face is 5000 meters wide. How wide is the bottom of the dam?

1 ha = 10000 M2
76.5 ha = 765000 M2
765000×2÷90－5000=12000