jawab sekarang pke penyelesaian

v. kerucut + v. ½bola
⅓πr²t + ⅔πr³
t.kerucut = √s²-r²
= √39²-15²=36
(⅓x3,14x15x15x36)+(⅔x3,14x15x15x15)
=8478+7065
= 15.543cm³