Jawaban:
a.L = πr²
L = 3,14 × 10,5²
L = 3,14 × 110,25
L = 346,185 cm²
b. L = πr²
L = 22/7 × 21²
L = 22/7 × 441
L = 22 × 63
L = 1386 cm²
c. L = πr²
L = 3,14 × 30²
L = 3,14 × 900
L = 2826 cm²
semoga membantu.. maaf kalau salah.. jadiin jawaban tercerdas ya kalo benar..
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Jawaban:
a.L = πr²
L = 3,14 × 10,5²
L = 3,14 × 110,25
L = 346,185 cm²
b. L = πr²
L = 22/7 × 21²
L = 22/7 × 441
L = 22 × 63
L = 1386 cm²
c. L = πr²
L = 3,14 × 30²
L = 3,14 × 900
L = 2826 cm²
semoga membantu.. maaf kalau salah.. jadiin jawaban tercerdas ya kalo benar..