r = 2
area = 3.14(2^2)
area = 3.14 (4)
area = 12.56 sq inches
A = 19.625 inches
formula for a circle is A = Pie * radius squared. 2.5 times 2.5 is 6.25 now multiply that by 3.14 to get 19.625 inches.
Look at the attachment
Solve the equation below.
b. x + 1
we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.
as we can see m is taken for the number of months for years 1900-2009.
we know that number of months can't be a negative number or decimal number or a fraction.
so, the number of months could be only positive whole numbers.
therefore, whole numbers is more appropriate for the domain of r.