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37,68 = 2.3,14.r
37,68 = 6,28 r
r = 6
L = πr²
= 3,14.6²
= 3,14.36
= 113,04
Jadi luasnya 113,04
37,68 = 2 × 3,14 × r
37,68/ 6,28 = r
6 = r
L =πr²
L = 3,14 × 6 × 6
L= 113, 04 cm²