Cara meghitung luas lingkaran dengan diameter 30 cm

r = d : 2
r = 30 : 2
r = 15 cm

L = πr2
L = 3.14 x 15^2
L = 3.14 x 225
L = 706.5 cm2

Jawaban: B.

d = 30 => r = 15
L = π r²
= 3,14 x 15²
= 3,14 x 225
= 706,5 cm²
Jawaban : B

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