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→s = √r²+t² = √6²+30² = √36+900 = 30,59
⇒πr² + π r s
⇒(3,14 × 6 × 6) + (3,14 × 6 ×30,59)
⇒113,04 + 579,3156
⇒689,3556 cm²
kalo ada yang slah, mohon koreksinya