Question

Luas lingkaran 314 cm pangkat 2. hitunglah kelilingnya

Answer 1

Verified answer

Πr*2= 314
3,14x r*2 = 314
r*2 = 100
r= 10 cm

kll = 2πr= 2x3,14x10= 62,8 cm

Answer 2

L lingkaran = phi x r^2
314 cm^2 = 3,14 x r^2
314/3,14 = r^2
r^2 = 100
r = akar pangkat 2 dari 100
= 10 cm

k lingkaran = 2 x phi x r
= 2 x 3,14 x 10
= 62,8 cm

semoga membantu:)