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=3,14 × 10 ( 10+ s) cari s dengan rumus pythagoras
s= √24² +10² = √ 576 +100= √676 = 26 cm
= 3,14 × 10 (10+26)
=31,4 (36)
=1130,4 cm²
luas selimut = phi.r.s
=3,14 × 10 × 26
=31,4 ×26 = 816,4 cm²
selisih = 1130,4 cm² - 816,4 cm²
= 314 cm²
maaf jika kurang benar
Terimakasih