更新1:
我想要式
更新2:
50 X 2 ÷ 20 這條式可以嗎？我未學過代數。
Maths (P.5)
2007-01-14 9:16 pm
The area of a trapezium is 50 cm2. The sum of the two parallel sides is 20cm. What is the height?
回答 (3)
2007-01-14 9:21 pm
✔ 最佳答案
Using formula: Area of trapezium = (sum of two parallel sides) × (height) / 2Now:
50 cm² = (20 cm) × (height) / 2
height = 5 cm
So the height is 5 cm.
2007-01-14 13:33:51 補充：
回應你的補充：如果你不需要代數，你可以用算式：height= (50cm²) × 2 ÷ (20 cm)= 5 cm
2007-01-14 9:20 pm
The height is 2.5cm
2007-01-14 13:23:55 補充：
Area = [(sum of the two parallel sides) h]/250 = (20h)/2100 = 20hh = 5The height is 5cm.(Sorry...It's not 2.5cm)
2007-01-14 13:23:55 補充：
Area = [(sum of the two parallel sides) h]/250 = (20h)/2100 = 20hh = 5The height is 5cm.(Sorry...It's not 2.5cm)
收錄日期: 2021-04-18 19:58:42
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https://hk.answers.yahoo.com/question/index?qid=20070114000051KK01908