Hitunglah volume prisma berikut!

Tinggi trapesium = Rumus phytagoras b= √c² - a²
                                                                = √10² - ((21 - 9) : 2)²
                                                                = √100 - 36
                                                                = √64
                                                                = 8 cm

Volume prisma trapesium = (1/2 (a+b) x t) x t
                                          = (1/2 (21+9) x 8) x 32
                                          = 120 x 32
                                          = 3.840 cm³

Luas alas
= 1/2 × (21+9) × 8
= 120 cm²

Volume
= Luas alas × tinggi
= 120 cm² × 32 cm
= 3.840 cm³