Use function notation to represent the area of a circle whose circumference is 136cm

Question

asked May 9, 2020 177k views

1 Answer

Steve Goodman · Answer 1 · 2020-05-16T02:40:29+0000

Answer:

$A((68)/(\pi))=(4624)/(\pi)$

Explanation:

The given circle has circumference 136cm.

The formula for circumference is
$C=2\pi r$

This implies that:

$136=2\pi r$

$(136)/(2\pi)=r$

$(68)/(\pi)=r$

The area of a circle is given as
$A(r)=\pi r^2$

When
$r=(68)/(\pi)$

$A((68)/(\pi))=\pi*((68)/(\pi))^2$

$A((68)/(\pi))=\pi*((68)^2)/(\pi^2)$

$A((68)/(\pi))=(4624)/(\pi)$