Jawaban:
B. 346,5 cm²
Penjelasan dengan langkah-langkah:
L = π × r × r
= 22/7 × 21/2 × 21/2
= (11×3×21)/2
= 693/2
= 346,5 cm²
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Jawaban:
B. 346,5 cm²
Penjelasan dengan langkah-langkah:
L = π × r × r
= 22/7 × 21/2 × 21/2
= (11×3×21)/2
= 693/2
= 346,5 cm²