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The experimental primary school has a triangular flower bed, which is drawn on the map at the scale of 1:1000. The bottom is 4cm. What is the actual area of the flower bed? Who answers first, who adopts
Actual bottom: 4 △ 1:1000 = 4000 cm = 40 m
Actual height: 3 △ 1:1000 = 3000cm = 30m
Area: 40 * 30 * 1 / 2 = = 600 square meters
This is the first answer. I wish you progress!
A nursery is 50 meters long and 40 meters wide. Draw it on a 1 / 1000 scale drawing. How many square centimeters is the area on the drawing? Find the specific formula
50m = 5000cm
40m=4000cm
5000*1/1000=5cm
4000*1/1000=4cm
4 * 5 = 20 square centimeter
Draw the same triangle plot into two maps according to different scales
The same triangle plot is drawn into two maps of a and B according to different scales. Let the scale of map a be 1:200 and that of map B be 1:1000, and then calculate the similarity ratio and area ratio of the two maps
A: the length similarity ratio is 200 to 1000, which is 1 to 5,
The area ratio is 200 * 200 to 1000 * 1000, that is 40000 to 1000000. After simplification, it is 1 to 25
RELATED INFORMATIONS
- 1. The length of the bottom edge of a triangle is 80 meters, and the height of the bottom edge is 20 meters. Draw it on a drawing with a scale of 1:1000, and Xiaohua gets the drawing The area of this triangle is 80 × 20 ÷ 2 × 1000 / 1 = 0.8 square meters. Is Xiaohua right? If not, please change it
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- 20. A street garden covers three fourths of an hectare, half of which are lawns, 20% are flower beds, and the rest are sidewalks What are the total area of lawn and flower bed? & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; what are the total area of lawn and flower bed; 3.