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Verified answer
Mapel : MatematikaBab : Bangun Datar
Diketahui :
Luas lingkaran (L) = 4.534,16 cm²
Ditanyakan :
Panjang jari-jari lingkaran (r) = .... ?
Penyelesaian :
Luas lingkaran = π x r²
4.534,16 cm² = 3,14 x r²
r² = 4.534,16 cm² : 3,14
r² = 1.444 cm²
r = √1.444
r = 38 cm
4.534,16cm2=3,14×r×r
r×r=4.534,16cm2÷3,14
r×r=1.444 (akar)
r×r=38