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= 4/6 x 343
= 228,66 cm³
luas selimut = kliling alas x tinggi
= 40 x 12
= 480
=1/2(4/3.22/7.7.7.7
=1/2(1428)
=714 cm^3
L.permukaan = 10.10+4(a.t/2)
= 100+4(65)
=100+240
=340 cm^2