tolng ya ka nomer 2 aja bantu ya !!!!

kerucut
volume kerucut = 1/3πr²t
324 π = 1/3 ×9²×t
324 π = 27t
27t= 324π
t= 324/27
t = 12
a. tinggi kerucut = 12 cm
b. panjang garis pelukis = s
s²= r²+t²
= 9² + 12²
= 81 + 144
s =√225
s= 15 cm