Question

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Answer 1

Jawaban:

B. 314,0 cm²

Penjelasan dengan langkah-langkah:

Luas lingkaran

[tex] = \frac{1}{4} \pi {d}^{2} \\ = \frac{1}{4} \times 3.14 \times {20}^{2} \\ = \frac{1}{4} \times 3.14 \times 400 \\ = 3.14 \times 100 \\ = 314 \: {cm}^{2} [/tex]

Jadi luas bangun tersebut adalah 314,0 cm²

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