You can find the permeter if you know the length of the sides. You need to add the lengths of all the sides together.
4*5=20 20 cm
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it depends on the triangle.if it is a "pure" triangle (symetrical on all sides) then the permeter is 9
area is the amount inside the object and permeter is the amount outside of it. To find area you do length times width. To find perimeter you add all the sides together.
The River Thames does not have a delta.
64cm2
An odometer.
You can find Delta in the BB Base
Join and you will find out...you wont find out from a Delta Chi member otherwise, I guarentee it
Look on one of the main rivers - or find the town Delta on a map!