b. 314 cm²
Penjelasan dengan langkah-langkah:
K = 62,8 cm
d = K : π
= 62,8 : 3,14
= 20 cm
r = 20 : 2 = 10 cm
L = πr²
= 3,14 x 10 x 10
= 314 ²
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b. 314 cm²
Penjelasan dengan langkah-langkah:
K = 62,8 cm
d = K : π
= 62,8 : 3,14
= 20 cm
r = 20 : 2 = 10 cm
L = πr²
= 3,14 x 10 x 10
= 314 ²