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2
= s² - πr²/2
= 14² - 22/7 × 7 × 7/2
= 196 - 77
= 119 cm²
B.) La = Lps - Llgk
= s² - πr²
= 10² - 3,14 × 5 × 5
= 100 - 78,5
= 21,5 cm²