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There are two maps with scales of 1:1000000 and 1:600000 respectively. On these two maps, the distance between a and B is 12 cm, and the distance between a and B is 12 cm
Suppose the actual distance between Party A and Party B is x km. The equation is given by the meaning of the question. X: 600000-x: 1000000 = 0.0001210x: 6000000-6x: 6000000 = 0.000122x: 300000 = 0.00012x = 180 A: the actual distance between Party A and Party B is 180 km
The distance between a certain two places on a 1:5000000 map is 30cm. How many kilometers is the actual distance between the two places?
According to the scale of 1:5000000, if the distance between the two places on the map is 1 unit, then the actual distance between the two places is 5000000 units. In short, if the distance between the two places on the map is 1cm, then the actual distance between the two places is 5000000cm
Then according to the conditions, the distance between the two places on the map is 30cm, so the actual distance between the two places is
30 × 5000000cm = 150000000cm, then according to the rule of unit conversion, 1m = 100cm,
1km = 1000m, so 150000000cm = 1500000m = 1500km
So the answer is 1500 kilometers
To do this problem, first calculate the field distance according to the scale, and then convert the unit according to the unit conversion rule
On a map with a scale of 1:5000000, the distance between the two places is 6cm
On the map of scale 1:5000000, the distance between the two places is 6cm. A and B cars drive from the two places at the same time and meet two hours later. It is known that the speed ratio of a and B cars is 2:3, so how many kilometers does a car travel per hour?
If the speed of a is x km / h, the speed of B is 3 / 2x km / h
Actual distance = 6x50 = 300km
2（x+3/2x）=300
x=60
Car a travels 60 kilometers per hour
On the map of 1:1000000 scale, the distance between a and B is 2.5cm, then the actual distance between a and B is______ Kilometers
According to the scale = distance on the map: actual distance, the actual distance between a and B is 2.5 × 1000000 = 2500000 (CM) = 25 (km)
If a square increases its side length by 4cm, the area of the new square will be 112 square centimeters larger than that of the original square. What is the side length of the original square?
As shown in the figure: the side length of the original square is: (112-4 × 4) △ 2 △ 4 = 96 △ 2 △ 4 = 12 (CM). The area of the original square is: 12 × 12 = 144 (cm 2). Answer: the area of the original square is 144 cm 2
Extend the length of each side of a square by 5 cm, and the area of the new square is 225 square cm more than that of the original square（
225 ÷ 5x5 = 9cm2 9x9 = 81
How to calculate the side length of a square? How to calculate the side length when the known area is 225 square centimeters?
This should not be a primary school problem, primary school did not learn the prescription, can only be based on experience, 225 square, side length of 15
The area of a square is 5 square centimeters. What is the side length of a square?
Side length √ 5cm
A: the side length of a square is 5 cm
In fact, it's a five square root
When the side length of a square is increased by 5 cm, the area will be increased by 125 square cm. What are the side length and area of the original square?
Please use arithmetic
Side length of original square = [(125-5 * 5) / 2] / 5 = 10 cm
The area of the original square = 10 * 10 = 100 square centimeters
If the side length of a square is increased by 5cm, the area will be increased by 125m2, so as to find the area of the original square
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