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3,14.5.13
= 204,1
S= akar kuadrat 2^2+5^2 = 13
= 5 ^2 + 12^2
= 25 + 144
= 169
s = √169
= 13 cm ^2
L.selimut = πrs
=3,14 × 5 × 13
= 204,1 cm^2