tolongg dong kak a. 30cm² b. 40cm² c. 50cm² d. 60cm² pake cara jalanny kak

[tex] {bd}^{2} = {4}^{2} +{3}^{2} \\ {bd }^{2} = 16 + 9 \\ bd = \sqrt{25} \\ bd = 5 \: cm[/tex]

[tex] {bc}^{2} = {13}^{2} - {5}^{2} \\ {bc}^{2} = 169 - 25 \\ bc = \sqrt{144} \\ bc = 12 \: cm[/tex]

[tex]luas \: segitiga \: bcd : \\ = \frac{a \times t}{2} \\ = \frac{5 \times 12}{2} \\ = 5 \times 6 \\ = {30\:cm}^{ 2}[/tex]
JADI JAWABANNYA A. [tex]{30 cm}^{2}[/tex]

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