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A triangle site of 0.25 hectare, its bottom is 125 meters, its height is 125 meters______ Rice
25 hectare = 2500 square meters, 2500 × 2 △ 125, = 5000 △ 125, = 40 (meters). Answer: its height is 40 meters. So the answer is: 40
The three sides of a triangular piece of land are 5m, 13m and 12m respectively. What is the area of this piece of land
This is a right triangle
Area = 5 × 12 △ 2 = 30 (M2)
The height of a triangle is 144 cm, which is twice as high as the bottom, less than 4 cm
Let the base be xcm, then 2x + 4 = 144. The solution is: x = 74, triangle area = 74 * 144 / 2 = 5328 square cm
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