Penjelasan dengan langkah-langkah:
18)
45/360 x 22/7 x 42² - 45/360 x 22/7 x 28²
= 693 - 308
= 385 cm²
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Penjelasan dengan langkah-langkah:
18)
45/360 x 22/7 x 42² - 45/360 x 22/7 x 28²
= 693 - 308
= 385 cm²