L alas = 1/4 × π × d² = 1/4 × 22/7 × 7 × 7 = 38,5 cm²
L selimut = k × t = (22/7 × 7) × 28 = 616 cm²
Lp = 38,5 = 616 = 654,5 cm² (D)
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L alas = 1/4 × π × d² = 1/4 × 22/7 × 7 × 7 = 38,5 cm²
L selimut = k × t = (22/7 × 7) × 28 = 616 cm²
Lp = 38,5 = 616 = 654,5 cm² (D)