Question

If $l=14\pi ,r=45\mathrm{cm}$, and $l=\frac{x}{360}\times 2\pi r$, then find the value of $x$.

Answer 1

Answer: 2

$l=14\pi \text{ and }r=45\mathrm{cm}$
$l=\frac{x}{360}\times 2\pi r$
$14\pi =\frac{x}{360}\times 2\times \pi \times 45$
$x=\frac{14\times 360}{2\times 45}$
$\therefore x=56$