Jawab ya pake cara 13 ama 15

13) Volume kerucut = ⅓ x 22/7 x r² x t = ⅓ x 22/7 x 7/2 x 7/2 x 12 = 154 cm³
15) Volume bola = 4/3 x 22/7 x r³ = 4/3 x 22/7 x 21/2 x 21/2 x 21/2 = 4851 liter

13)volume kerucut=1/3×π×r²×t
=1/3×3,14×3,5×3,5×12
=1/3×461,58
=153,86 cm³

15)volume bola=4/3×π×r³
=4/3×22/7×10,5×10,5×10,5
=4/3×1157,625/7
=4/3×165,375
=661,5/3
=220,5