Question

use the function notation to represent the area of a circle whose circumference is 133 cm.use the function notation to represent the circumference of a circle whose area is 5.3 cm²

Answer 1

The area of a circle with radius r is represented by the function h(r ); therefore using the function notation, the area of a circle whose radius is 133 cm is represented by

$h(g(133))$

(b).

The function that gives the radius as a function of area is

$j(A)$

and the function that gives the circumference as a function of radius is

$f(r)$

therefore, the function that gives

$f(j(A))$

When A = 5.4cm^2 we have

$f(j(5.4))$