proses bro.panjang diameter sebuah lingkaran 44cm.luas lingkaran itu.....cm pangkat 2

d= 44 cm
Ditanya= L?

L= 1/4 πr²
L= 1/4 x 3,14 x 44 x 44
L= 3,14 x 11 x 44
L= 34,54 x 44
L= 1519,76 cm²

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r = d ÷ 2
  = 44 ÷ 2
  = 22

L = π × r²
   = 3,14 × 22 × 22
   = 3,14 × 484
   = 1.519,76 cm²