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Verified answer
Diket=r=21/2cm
d=21cm
L=pi.r.r
ditanya luas=
pi×r×r
pernyataan=
22/7×21/2×21/2
22×3/2×21/2
11×3×21/2
33×21/2
693/2
346,5
jadi,luas lingkaran adalah 346,5 cm persegi
d = 21 cm
Ditanya :
L = ...?
Dijawab :
L = ¼πd²
L = ¼ × 22/7 × 21²
L = 346,5 cm²