Pake cara help'-' hshshshs

Pake cara help’-‘ hshshshs

Jawaban:

C. 4

Penjelasan dengan langkah-langkah:

${c}^{2} = {a}^{2} + {b}^{2}$

${20}^{2} = {(3n)}^{2} + {(4n)}^{2}$

$400 = {9n}^{2} + {16n}^{2}$

$400 = {25n}^{2}$

$frac{400}{25} = {n}^{2}$

$16 = {n}^{2}$

$n = sqrt{16}$

$n = 4$

Jadi, nilai n sama dengan 4