The area of a triangular vegetable field is 32.4 square meters. The height of one side is 4.5 meters. How many meters is this side?

The area of a triangular vegetable field is 32.4 square meters. The height of one side is 4.5 meters. How many meters is this side?

32.4*2/4.5=14.4

The circumference of the rectangle is 280 cm and the width is 40 cm. Taking one side of the rectangle as the base, make a triangle with a height of 50 cm. What is the area of the triangle?

One hundred
280 △ 2-40 = 100 (the length of a rectangle). Take one side of the rectangle as the base to make a triangle with a height of 50 cm. Therefore, the length of the rectangle is taken as the height, and the bottom is the bottom of the triangle, that is, 40 cm. The area formula of the triangle is: bottom × height △ 2
So 50 × 40 △ 2 = 100
Do you understand

The school assigned 560 trees to grade four, five and six according to the ratio of 4:5:7. How many trees should be planted in each grade?

560÷（4+5+7）
=560÷16
=35 (trees)
35 × 4 = 140 (trees)
A: 140 trees were planted in the fourth grade
35 × 5 = 175 (trees)
A: 175 trees were planted in the fifth grade
35 × 7 = 245 (trees)
Answer: 245 trees were planted in the sixth grade

Wang's family has a triangular vegetable field with a base length of 16m (as shown in the picture). If the bottom is extended by 1.5m, the area of the vegetable field will be increased by 6m2?

6 × 2 △ 1.5 = 8 (m)
16 × 8 △ 2 = 64 (M2)
A: the area of this triangular vegetable field is 64 square meters

The area of a triangle is 3 / 8 square meters, and its base is 2 / 5 meters long. How many meters is it high? First write the formula and use the equation to solve it

Set the height as X M
2/5*X*1/2=3/8
X/5=3/8
X=15/8
The bottom is 15 / 8m

A triangular vegetable field is 46 meters long at the bottom and 1.5 times as high as the bottom. What is the area of this vegetable field? If it is per hectare A triangular vegetable field, 46 meters long at the bottom and 1.5 times as high as the bottom What is the area of this vegetable field? If 3400 kilograms of vegetables can be harvested per hectare, how many kilograms of vegetables can be harvested in this field?

Therefore, the area of vegetable base is 158.2 × 0.5 m, and the yield area is 158.2 × 1.58 M 2,

On a map on a scale of 1:200,

I don't know what you mean. 1:200 means 1 cm is equivalent to 200 cm

1. The scale of a map is 1 / 200000. It is known that the actual distance between a and B is 5000 meters. What is the distance of AB2 on the map? 2. The scale of a plan is 1 / 2000, the distance on the map is 4cm, and the actual distance is () 3. On a drawing, the longest part of a part is 1.2cm, and the actual longest part of this part is 24cm. The scale of this drawing is () 4. The distance from the school to the South Lake is 1800 meters. The distance is indicated by 4 decimeters on a plan. The scale of this plan is () 5. On a map with a scale of 1:500000, the distance between city a and city B is 3.2 cm, and the actual distance between city a and city B is ()

eight thousand
1:200
1:25000
one million and six hundred thousand

If the design requirements can reflect the field accuracy of 0.1M, which scale topographic maps can meet the accuracy requirements? Which one can meet the accuracy requirements and which is the most economical and reasonable? A: topographic map with scale meeting the accuracy requirements Among them, it can meet the accuracy requirements and is the most economical and reasonable

It can reflect the field accuracy of 0.1M, that is, the scale is greater than 0.1mm/0.1m = 1:1000
A: the topographic maps with 1:500 and 1:1000 scales meet the accuracy requirements
Among them, 1:1000 scale topographic map can meet the accuracy requirements and is the most economical and reasonable

On a map on a scale of 1 / 5000, the 4cm line segment represents the actual distance of () meters

On a map on a scale of 1 / 5000, a 4cm line segment represents an actual distance of (200) meters
4 * 5000 = 20000 cm = 200m