Question

Cercul cu diametrul egal cu 16 cm are aria egala cu......cm​

Answer 1

D=2r=>r=D/2=16/2=8 cm

A=πr²=8²π=64π cm²

Answer 2

Răspuns:

D=2R => R=D/2=16/2=8cm.

$a = \pi \times {r}^{2} = > a = \pi \times {8}^{2} = > a = 64\pi$