小六升中一數學暑期作業(英文)超easy 15分

2007-07-26 12:46 am
1.A triange of height 4cm and base 6cm is cut and rearranged to form a trapezium as shown in the following figure. Find the lower base of the trapezium.

2.the area of a parallelogram is equal to the area of a triange. the height of the triange is 5 cm . if the two figures have the same base , find the hieght of the parallelogram.
let the height of parallelogram be (h) cm and their bases be (b) cm.


唔該sai~~~~~~~~~~~~~

回答 (2)

2007-07-26 9:30 am
✔ 最佳答案
1. 沒有圖...所以問題唔清楚 (唔知佢點cut)

2. area of parallelogram = area of triangle
b x h = ( b x 5 ) /2
h = 2.5
so, the height the parallelogram is 2.5 cm
2007-07-26 9:30 pm
2. area of parallelogram = area of triangle
b x h = ( b x 5 ) /2
h = 2.5
so, the height the parallelogram is 2.5 cm


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