panjang BE adalah... secepatnya kakk

BE = panjang diagonal sisi

BE = akar 70^2 + 70^2
BE = akar 4.900 + 4.900
BE = akar 9.800
BE = 70 akar 2

BE = Diagonal Sisi
Rusuk = 70

Diagonal sisi = r√2
Diagonal sisi = 70√2