Tolong di jawab pakai jalan!makasih : )​

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Tolong di jawab pakai jalan!makasih : )​

Tolong di jawab pakai jalan!makasih : )​

Jawab:

B. 12 cm

Penjelasan dengan langkah-langkah:

L = (d1 x d2)/2

90 = (4x x 5x)/2

180 = 20x^{2}

9 = x^{2}

x =±3

diagonal 1 = 4x = 12 cm

diagonal 2 = 5x = 15 cm