Caranya gimana nih;(?Jawab+Cara

Ukuran kubus
s = 10 cm

ukuran balok
p = 14 cm
l = 10 cm
t = 10 cm + 7 cm = 17 cm

Luas permukaan gabungan
= 2(pl + pt + lt) + 4.s²
= 2(14 x 10 + 14 x 17 + 10 x 17) + 4 . 10²
= 2(140 + 238 + 170) + 400
= 2(548) + 400
= 1.096 + 400
= 1.496 cm²