Tolong pake cara yaa

Bab Bangun Ruang
Matematika SMP Kelas VIII

TO : OP = 2 : 3
18 / OP = 2 / 3
OP = 3 x 18 : 2
OP = 27 cm

TP = TO + OP
TP = 18 + 27
TP = 45 cm

volume ABCD EFGH
= volume limas TABCD - volume limas TEFGH
= (1/3 x AB² x TP) - (1/3 x EF² x TO)
= 1/3 x (20² x 45 - 10² x 18)
= 1/3 x (18.000 - 1.800)
= 1/3 x 16.200
= 5.400 cm^3