Problema Solution
Suppose a pizza must fit into a box with a base that is 12 inches wide. You can use the quadratic function A=3.14r^2 to find the area of a pizza in terms of its radius. What values of r make sense for the function? What values of A make sense for the function? Graph the function. Round values of A to the nearest tenth.
Answer provided by our tutors
the area of the base of the box is
B = 12*12
B = 144 in^2
What values of r make sense for the function?
3.14*r^2 <= 144
by solving we find
r <= 6.8 in
and also r>0 since the radius can not be negative
What values of A make sense for the function?
A <= 144 in^2
as well as A > 0 the area can not be negative number
click here to see the graph of the function A=3.14r^2