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Dik = t. tabung=20cm
jari jari=14/2=7cm
t. bangun=44cm
Dit = l. permukaan
Jb =
T. kerucut= t. bangun-t. tabung
=44-20
=22cm
garis pelukis(s) = √r²+tk²
=√7²+22²
=√49+484
=√533=23cm
L. permukaan= l. alas+l. selimut tabung+l selimut kerucut
=Πr(r+2t+s)
=22\7×7(7+2×20+23)
=22(7+40+23)
=22×70
=1540cm²