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  1. 1.square 正方形 2. rectangle 長方形 3.quadrangle四邊形 4.pentagon 五邊形 5.hexagon 六邊形 6.heptagon 七邊形 7.octagon...

  2. ... figure below shows two vessels A and B in the shape of prisms. The base of vessel A is a rectangle whereas the base of vessels B is a right-angled triangle...

  3. firstly, 162cm^3=162*1000mm^3=162000mm^3 volumn=area*thickness area=volumn/thickness=162000/0.00009mm^2 =(162000/0.00009)/(1000*1000)m^2 =1800m^2 it is very important to convert cm^3 to mm^3 and convert mm^2 to m^2 for this question.

  4. ... the Perimeter and n is the number of sides. Rectangle 圖片參考:http://upload.wikimedia.org/math/0/b/8/0b85e50acaea901014da7871c8e193f9.png l and...