Question

To long jawab pertanyaan INI kasihani saya

Answer 1

P = 11
l = 5
t = 3 + X

a) volume = p x l x t
385 = 11 x 5 x (3 + X)
385 = 55 x (3 + X)
385 : 55 = 3 + X
7 = 3 + X
X = 7 - 3
X = 4 cm

b) tinggi = 3 + X
t = 3 + 4
t = 7 cm

c) luas permukaan = 2(pl + pt + lt)
= 2[(11 x 5) + (11 x 7) + (5 x 7)]
= 2(55 + 77 + 35)
= 2(167)
= 334 cm^2