Question

determinati raza unui cerc care are lungimea egala cu:
a) 18pi cm
b)16radical 2pi cm
c) 4pi radical 6 cm
d) 9 pi cm​

Answer 1

Răspuns:

Explicație pas cu pas:

L=2πr       r=L/2π

a)L= 18π  cm    ⇒r=18π/2π=9cm

b)L=16π√2 cm  ⇒r=16π√2/2π=8√2 cm

c)L=4π√6 cm   ⇒r=4π√6/2π=2√6 cm

d)L=9π cm  ⇒r=9π/2π=4,5 cm