The bottom of a triangle vegetable field is 200 meters and the height is 100 meters

Answer: 1
(200 * 100) / 2 = 10000 M2 = 100 mu = 1 ha

There are three grasslands with an area of 4 mu, 8 mu and 10 mu. The grass on the grassland is as thick and grows as fast. The first grassland can feed 24 cattle for 6 weeks, and the second grassland can feed 36 cows for 12 weeks. How many weeks can the third grassland provide for 50 cattle?

Let each cow eat one portion of grass a week
There is a 1 mu grassland, which can feed 24 ／ 4 = 6 cattle for 6 weeks,
Supply 36 △ 8 = 9
2 cows for 12 weeks,
So how many weeks can you feed 50 × 10 = 5 cows?
Therefore, the grass grows (9
2 × 12-6 × 6) × (12-6) = 3 (parts),
The original grass (6-3) × 6 = 18,
That's enough for 5 cows to eat 18 × (5-3) = 9 (weeks)
A: the third piece of grass can feed 50 cattle for 9 weeks

If the first grassland can feed 10 cattle for 30 days and the second grassland can feed 28 cows for 45 days, then how many cows can feed on the third grassland for 80 days?

If the daily grass consumption per cow is 1, the total grass amount per hectare is 30 days is 10 × 30 △ 5 = 60; the total grass amount per hectare is 45 days is 28 × 45 △ 15 = 84; then the new grass amount per hectare is is (84-60) / (45-30) = 1.6; the original grass amount per hectare is is 60-1.6 × 30 = 12; then the original grass amount per hectare is is 60-1.6 × 30 = 12

There are three grasslands with an area of 4 mu, 8 mu and 10 mu. The grass on the grassland is as thick and grows as fast. The first grassland can feed 24 cattle for 6 weeks, and the second grassland can feed 36 cows for 12 weeks. How many weeks can the third grassland provide for 50 cattle?

Let each cow eat one portion of grass every week. We have a 1 mu grassland, which can feed 24 ／ 4 = 6 cattle for 6 weeks, 36 ／ 8 = 92 cows for 12 weeks. Then how many weeks can 50 ／ 10 = 5 cattle eat? Therefore, the annual growth of the grass was (92 × 12-6 × 6) × (12-6) = 3 (share), and the original grass (6-3) ×

A triangular vegetable field covers an area of 0.24 hectares. Its bottom is 40 meters. How many meters is its height?

0.24 ha = 2400 M2
Height 2400 × 2 △ 40
=4800÷40
=120 m

On a map, the bottom of a triangular vegetable field measured is 10 cm and the height is 6 cm. How many hectares is the actual area of this vegetable field?

① Calculate the area of vegetable field on the map as follows:
S = 10 * 6 / 2 = 30 square centimeter
② If you look at the scale of the map, say 1:2000000, remember this 2000000
③ Converted into actual area, calculated by 2000000
S actual = 30 * 2000000 = 60000000 square centimeter
④ It turns into hectare,
1 ha = 15 mu
1 mu = 666 and 2 / 3 square meters
Square meter = 10000 square meters
So s actual = 60000000 / 10000 / 666.6666/15 = 0.6 ha
Note: if the scale is not 2000000, please change it to the scale on your map

A triangular vegetable field, the area is 0.72 hectares, the known base is 240 meters, what is the height?

0.72*2*10000/240

There is a triangular vegetable field with an area of 0.24 hectares. Its bottom is 150 meters. How many meters is its height?

0.24 ha = 2400 M2
2400×2÷150
=4800÷150
=32 (m)
A: the height of the vegetable triangle is 32 meters

There are three grasslands with an area of 4 ha, 8 HA and 10 ha respectively. The grass on the grassland is as thick and grows as fast. The first grassland can feed 24 cows for 6 weeks, the second grassland can feed 36 cattle for 12 weeks, and the third grassland can feed 50 cattle for several weeks. It is better to solve the problem of cattle grazing. If the equation is used, only one variable linear equation can be used. Good bonus points

Let each cow eat x hectares of grass every day
The second plot grows twice as fast as the first
2(24*6x-4）/6＝（36*12x-8）/12
X = 1 / 6
The growth rate of grass was (36 * 12 * 1 / 6-8) / 12 = 16 / 3 HA / week
10 / (50 * 1 / 6-16 / 3) = 10 / 3 weeks
It's not necessarily true. You can check it yourself. After all, it's been a long time since you touched a cow to eat grass

There are three grasslands, each covering 5, 6 and 8 hectares. The grass on the grassland is the same thickness and grows as fast. The first one can feed 11 cattle for 10 days, and the second one can supply 12 The second grassland can feed 12 cattle for 14 days

11 * 10 = 110 (head * day)
12 * 14 = 168 (head * day)
168-110 = 58 (head * day)
Each additional male tilt can increase 58 days
58 * 2 = 118 (head * day)
(118 + 168) / 19 = 15 (days)
A: the third piece of grass can feed 19 cattle for 15 days

The bottom of a triangle vegetable field is 200 meters and the height is 100 meters