Jawaban:
25. L1 = a × t
= 16 cm × 13 cm
= 208 cm²
L2 = 1/2 × 22/7 × 7 cm × 7 cm
= 77 cm²
L1 + L2 = 208 cm² + 77 cm²
= 285 cm²
26. L = (360° - 72°)/360° × 3,14 × 10 cm × 10 cm
= 288°/360° × 314 cm²
= 251,2 cm²
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Jawaban:
25. L1 = a × t
= 16 cm × 13 cm
= 208 cm²
L2 = 1/2 × 22/7 × 7 cm × 7 cm
= 77 cm²
L1 + L2 = 208 cm² + 77 cm²
= 285 cm²
26. L = (360° - 72°)/360° × 3,14 × 10 cm × 10 cm
= 288°/360° × 314 cm²
= 251,2 cm²