Jawapan

2016-10-04T23:26:02+08:00
(1/2 x 15 x 15 x 20) - (1/4 x 22/7 x 7 x7 x 20)
= 2250 - 770
= 1480cm³
jawapan bape? betul tk cuba je..
2016-10-04T23:31:02+08:00
isipadu prisma tegak - (l.tapak) x tinggi =(20 x 15) x 15 =4500 cm padu isipadu sukuan silinder - 1/4 x pai x j2 x t = 1/4 x 22/7 x (7x2) x 15 = 770 cm padu isipadu pepejal yang tinggal = 4500-770 =3730 cm padu