Penjelasan dengan langkah-langkah:
L = 2 πr ( r + t )
= 2 x 22/7 x 42 ( 42 + 100)
= 264 ( 142 )
= 37.488 cm²
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Penjelasan dengan langkah-langkah:
L = 2 πr ( r + t )
= 2 x 22/7 x 42 ( 42 + 100)
= 264 ( 142 )
= 37.488 cm²