Question

kak tolong di bantu menjawabnya ya​

Answer 1

a. p = 4a = 4x5 = 20 cm

l = 2a = 2x5 = 10 cm

t = 3a = 3x5 = 15 cm

b. 180 cm

c. V = 3.000 cm²

Penjelasan dengan langkah-langkah:

p = 4a cm

l = 2a cm

t = 3a cm

2(pl + pt + lt) = L

pl + pt + lt = L/2

4a x 2a + 4a + 3a + 2a x 3a = 1300/2

8a² + 12a² + 6a² = 650

26a² = 650

a² = 650/26

= 25

a = √25 = 5

a. p = 4a = 4x5 = 20 cm

l = 2a = 2x5 = 10 cm

t = 3a = 3x5 = 15 cm

b. panjang kerangka balok

= 4 x (p + l + t)

= 4 x (20 + 10 + 15)

= 4 x 45

= 180 cm

c. V = p x l x t

= 20 x 10 x 15

= 3.000 cm³