P = 8cm L = 6cm. T = 12cm

Diketahui:

p = 8 cm

l = 6 cm

t = 12 cm

Ditanya:

Lp = … cm²

Jawaban:

Lp = 2 × ((p × l) + (p × t) + (l × t))

= 2 × ((8×6) + (8×12) + (6×12))

= 2 × (48 + (8×12) + (6×12))

= 2 × (48 + 96 + (6×12))

= 2 × (48 + 96 + 72)

= 2 × (144 + 72)

= 2 × 216

= 432 cm² Opsi C

2 x (p x l) (p x t ) ( L x t ))

2 x (8 x 6) +(8 x12) +(6 x 12)

2 x (48 + 96 + 72)

=432 cm2