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{√(15"+10") - 15" } - {√10"-6"}
r1=15cm
r2=6cm
a.) t1=√s^2 - r1^2
t=√25^2 - 15^^2
t=√625 - 225
t=√400
t=20cm
t2= √s^2 - r2^2
t=√10^2-6^2
t=√100-36
t=√64
t=8cm
t1-t2=20-8=16 cm(tinggi)
b.) Luas Permukaan
=Π×r(r+s)
=3,14 × 15(15+15)
= 47,1 × 225
= 10.597,5 cm^2
(maaf kalau salah)