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√346,5 : 22
7
√346,5 x 7 = √ 2425,5 = √110,25 = 10,5
22 22
jadi diameter = 2 x r
2 x 10,5 = 21 cm
Ditanyakan ~> Diameter lingkaran
Jawab ~> r² = L : π
= 346,5 cm² : 22/7
= 346,5 cm² × 7/22
= 2425 cm² : 22
= 110,25 cm²
r = √110,25 cm²
= 10,5 cm
d = 2 × r
= 2 × 10,5 cm
= 21 cm