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d=16
r=1/2·16= 8 cm
A.
garis pelukis (s)
s²=t²+r²
s²=15²+8²
s²=225+64
s²=289
s=√289
s=17 cm
Volume kerucut
=1/3·π·r²·t
=1/3·22/7·8²·15
=22/21·8·8·15
=1056 cm²
r = d : 2
r = 16 : 2
r = 8 cm
t = 15 cm
a). garis pelukis =
garis pelukis =
garis pelukis =
garis pelukis =
garis pelukis = 17 cm
b). V kerucut = x x x t
V kerucut = x 3,14 x x 15
V kerucut = 3,14 x 64 x 5
V kerucut = 1004,8