Question

Un disc are aria 256raza cm2. Raza discului este de ... cm.​

Answer 1

Salut!

${ \red{ aria_{disc} = \pi {r}^{2} } }$

$\: aria_{disc} = 256\pi {cm}^{2}$

$\blue{ \boxed{raza = \sqrt{ aria_{disc}} } }$

$raza \: = \sqrt{256} \\ raza = 16cm$

Answer 2

.................. Coroana?