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a. d1 = (3+3)= 6
d2 = (√5^2-3^2) +3=7 (rumus Pythagoras)
L = 1/2 x 6 x 7 = 21cm^2
b. d1 = 14
d2 = 12
L = 84cm^2
c. d1 = 20
d2 = 18
L = 180 cm^2
d. d1 = 25
d2= 24
L = 300cm^2
untuk cari diagonal pake rumus pytagoras