Jawab: A
d = 40 cm ⇒ r = 20 cm
Lp 1/2 bola = 1/2 x 4 πr²
= 2 x 3,14 x 20 x 20
= 2.512 cm²
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Jawab: A
d = 40 cm ⇒ r = 20 cm
Lp 1/2 bola = 1/2 x 4 πr²
= 2 x 3,14 x 20 x 20
= 2.512 cm²