tolong ya,sama cara nya

(a). V= p x L x t
= 12cm x 9cm x 18cm
= 1944 cm³
(b). LP= 2x (pxL + pxt +Lxt)
= 2x (12x9 + 12x18 + 9x18)
= 2x (108 + 216 + 162)
= 2x 486
= 972 cm²
(c). LP tanpa tutup
= 972 - (12 x 9)
= 972 - 108
= 864 cm²


#semoga membantuu,-