12.56 because you multiply the radius by 2 then multiply that by 3.14
The African countries can easily be described and generalized, in the sense of the whole continent, as the economies are predominantly dependent on one or two products.
That dependence on one or two products is making very big problems, and it is also a very big mistake of the governments. When there's a slight variation in the prices on the certain product, the economies are heavily influenced, often in a bed manner.
It is weird though that the African countries have orientated their economies in this way, especially because the continent is very rich in lots of natural resources.
X would equal 5. (need more characters)
The answer to your question is: Abrasion.
Abrasion occurs when sediments that are located on the shore of a lake, and an ocean accumulate along the shore.
The accumulation of sediment found along the shore of a lake or ocean is called a<em> Abrasion.</em>
I hope this helps! :)
Have a wonderful day!
-LizzyIsTheQueen