Jawaban:
L. Keseluruhan (r = 42 cm)
= ¼ × π × r²
= ¼ × 22/7 × 42 × 42
= ¼ × 22 × 6 × 42
= 5.544/4
= 1.386 cm²
L. Tanpa warna (r = 35 cm)
= ¼ × 22/7 × 35 × 35
= ¼ × 22 × 5 × 35
= 3.850/4
= 962,5 cm²
L. Berwarna
= L. Keseluruhan - L. Tanpa warna
= 1.386 - 962,5
= 423,5 cm²
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Jawaban:
L. Keseluruhan (r = 42 cm)
= ¼ × π × r²
= ¼ × 22/7 × 42 × 42
= ¼ × 22 × 6 × 42
= 5.544/4
= 1.386 cm²
L. Tanpa warna (r = 35 cm)
= ¼ × π × r²
= ¼ × 22/7 × 35 × 35
= ¼ × 22 × 5 × 35
= 3.850/4
= 962,5 cm²
L. Berwarna
= L. Keseluruhan - L. Tanpa warna
= 1.386 - 962,5
= 423,5 cm²