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s = √24²+7² = √576+49 = √625 = 25 cm
L selimut kerucut = 22/7 x 7 x 25 = 550 cm²
L alas tabung = 22/7 x 7 x 7 = 154 cm²
L selimut tabung = 22/7 x 14 x 12 = 528 cm²
L seluruhnya = 550 + 154 + 528 = 1232 cm²
Alas (lingkaran) + selimut tabung + selimut kerucut
Alas :
= π*r²
= 22/7*7²
= 154 cm²
Selimut tabung :
= Keliling * tinggi
= d²*π*12
= 14*22/7*12
= 44*12
= 528 cm²
Hitung panjang selimut :
Luas selimut kerucut :
π*r*s
22/7 * 7 * 25
550 cm²
Total = 154 + 528 + 550
= 1232 cm²