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Phi=22/7
r=7
S=?
Volume kerucut = 1/3 x phi. r²t
1232 = 1/3 x 22/7 x 7² x t
T = 1232 : 154/3
T = 1232 x 3/154
T =24
S?
S²= r²+t²
S² = 7²+24²
S²= 49+576
S = akar 625
S= 25
Luas selimut = 22/7. 7 . 25
=550 cm²