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Verified answer
Luas lingkaran adalah 1/4πd^2L=1/4πd^2
L=1/4×22/7×(28)^2
L=1/4×22/7×28×28
L=22×28
L=616 cm^2
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Verified answer
D= 28 cmr=14 cm
L = πr²
=22/7 x 14²
=22/7 x 196
=616 cm²