Tolong pakai cara ya

Tolong pakai cara ya

Penyelesaian:

1. t = $sqrt[3]{V}$

= $sqrt[3]{343m^{3} }$

= 7m x 2

= 14m

2. V = $frac{1}{2}$ x V balok

= $frac{1}{2}$ x 5.488

= 2.744cm³

s = $sqrt[3]{2.744cm^3}$

= 14 cm

3. V (bak air) = s³

= 50³

= 125.000cm³

V (mainan) = s³

= 15³

= 3.375cm³

Jadi, berapa cm³ air yang tumpah?

Yang tersisa = 125.000 – 3.375 = 121.625

= 125.000 – 121.625 = 3.375

4. $l$ = 30cm

P = $frac{3}{2}$ x 30 = 45

t = 4 cm + $l$ = 4 + 30 = 34cm

V balok = p x $l$ x t

= 45 x 30 x 34

= 45.900cm³

5. V balok 1 (atas) = 9 – 4 = 5

= 5 x 9 x 9

= 405

V balok 2 (bawah) = 12 + 9 = 21

= 12 x 21 x 4

= 1.008

= 1.008 + 405

= 1.413

Semoga bermanfaat.. 🙂