急!懂英语和数学的来啊!The length and width of a rectangle are 12cm and 5cm respectively. If the length is increased by 50% and the width is decreased by 20%.(a)Find the original area of the rectangle.(b)Find the new area of the rectangle.(c)Find the percentage increase in the area of the rectangle.
问题描述：
急!懂英语和数学的来啊!
The length and width of a rectangle are 12cm and 5cm respectively. If the length is increased by 50% and the width is decreased by 20%.
(a)Find the original area of the rectangle.
(b)Find the new area of the rectangle.
(c)Find the percentage increase in the area of the rectangle.
答
a）12乘以5=60
b) 12(100%+50%）乘以5（100%-20%）=72
c) 72-60=12
答
先对一些词翻译：length——长度 width——宽度 rectangle——矩形 respectively——各自地 increased——被增加 decreased——被减少 original——最初的 area——面积 percentage——百分比 翻译：一个长方形的长...