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Pelajaran. : Matematika
Kelas. : IX
Pembahasan
L.Selimut kerucut = πrs
1500. = 3,14. 30. s
1500. = 94,2 s
s = 1500/94,2
s= 16 cm
maka:
t= √s²+r²
t= √16²+30²
t= √256+900
t= √1156
t= 34
V. Kerucut
1/3.πr².t
= 1/3.3,14.30.30.34
= 1/3.94,2.30.34
= 1/3.2826.34
= 1/3.96084
= 32028 cm² → V. kerucutnya
Jadikan Jawaban Terbaik Ya
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