Question 1089307
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1.  Area of the circle of the radius r is  A = {{{pi*r^2}}} = {{{3.14*r^2}}} = {{{3.14*8^2}}}  ft^2.  Can you calculate it on your own ?


2.  Circumference of a circle of the radius r is  S = {{{2*pi*r}}} = {{{2*3.14*r}}} = {{{2*3.14*8}}}  ft.   Can you calculate it on your own ?




3.  To present {{{r^2}}}, write simply r^2.   Find this symbol "^" in your keyboard.  It is where "6" is.


    And NEVER more say "I don't know how  . . . ".  You are just explained.
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