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Panjang diagonal = p^2 + l^2.
1.
L = 8 × 6 = 48cm2.
Panjang diagonal^2 = 8^2 + 6^2
Panjang diagonal^2 = 64 + 36 = 100.
Panjang diagonal = Akar 100 = 10cm.
2.
L = 15 × 8 = 90cm2.
Panjang diagonal^2 = 15^2 + 8^2.
Panjang diagonal^2 = 225 + 64 = 289.
Panjang diagonal = Akar 289 = 17cm.
c2 = 8^2 + 6^2
c^2 = 64 + 36
c^2 = 100
c = 10
jadi panjang diagonal = 10
b. c^2= 15^2 + 8^2
c^2= 225 + 64
c^2 = 289
c = 17
jadi panjang diagonal = 17