NOMOR 7
sebelum ke soal, kita cari dulu tinggi kerucut
tinggi^2 = 10^2 - 6^2
tinggi^2 = 64
tinggi = 4
a) luas kerucut = (π . r . s) + (π . r . r )
= (3,14 x 6 x 10) + (3,14 x 6 x 6)
= 118,4 + 113,04
= 231,44
b) volume kerucut = 1/3 . π . r . r . t
=1/3 x 3,14 x 6 x 6 x 4
= 150,85
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NOMOR 7
sebelum ke soal, kita cari dulu tinggi kerucut
tinggi^2 = 10^2 - 6^2
tinggi^2 = 64
tinggi = 4
a) luas kerucut = (π . r . s) + (π . r . r )
= (3,14 x 6 x 10) + (3,14 x 6 x 6)
= 118,4 + 113,04
= 231,44
b) volume kerucut = 1/3 . π . r . r . t
=1/3 x 3,14 x 6 x 6 x 4
= 150,85