Question

alas sebuah limas berbentuk persegi tinggi limas 56 cm jika volume limas 1.512 cm3, Tentukan panjang rusuk alas limas!!

tolong bantu Jawab pertanyaan ini sama caranya ​

Answer 1

Limas persegi

[tex] volume = \frac{1}{3} \times {r}^{2} \times t \\ \\ 1.512 = \frac{1}{3} \times {r}^{2} \times 56 \\ \\ 1.512 = \frac{56}{3} \times {r}^{2} \\ \\ 1.512 \times \frac{3}{56} = {r}^{2} \\ \\ {r}^{2} = 81 \\ \\ r = \sqrt{81} \\ \\ r = 9 \: cm[/tex]

Answer 2

V = 1/3R²T

1.512 = 1/3(R²(56)

1.512 = 1/3(56(R²)

1.512 = 1(56)/3R²

1.512 = 56/3R²

56/3R² = 1.512

R² = 1.512(56/3)

R² = 1.512(3)/56

R² = 4.536/56

R² = 81/1

R² = 81

R = √81

R = √9²

R = 9 CM