F.3,,,,ratio.

Scale is 1:2000, that is 1cm: 2000cm, or 1cm: 20m.
So 1cm x 1cm = 1cm^2 = 20m x 20m = 400m^2.
Now actual area is 1000m^2. Therefore, area on map = 1000/400 cm^2 = 2.5cm^2.

Let the area of the garden on the map be x cm^2
(1/2000)^2=x cm^2/1000m^2
(1/4000000)=x cm^2/10000000cm^2
1/4000000=x/10000000
x=(1/4000000)x10000000
x=2.5cm^2
the garden on map is 2.5cm^2

2008-07-21 10:59:05 補充：
1:2000係平面的比例
所以計面積比例應將比例二次方(面積之比)~~~~~~
1:2000意義係1cm=2000cm
我地應1000m^2變成以cm^2為單位
1000m^2=1000mx1m=(1000x100)x(1x100)cm^2=100000x100=10000000cm^2

2008-07-21 11:02:59 補充：
Re:002
length???????
this is area, not the length of the garden