Find the perimeter of the circle. use 3.14 for pi.

Question

asked Feb 5, 2023 114k views

1 Answer

Dbrrt · Answer 1 · 2023-02-08T15:29:09+0000

The perimeter of an entire circle is the circunference, which is given by

$C=\pi d$

where d is the diameter.

In our case d=23cm then, by sbustituting this values into the last formula,we get

$C=(3.1416)\cdot(23)$

which gives C= 72.26 cm.

However, we need the perimeter of half circle, which is half C plus the vertical segment (23cm), that is

then, the perimeter P is

$\begin{gathered} P=(72.26)/(2)+23 \\ P=59.13\text{ cm} \end{gathered}$

then, the answer is 59.13 cm