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113.04 = 3.14 r²
r² = 113.04/3.14
r² = 36
r = √36
r = 6
K = 2πr
K = 2 . 3.14 . 6
K = 37.68 cm
Semoga dapat mudah dimengerti dan membantu :)
113,04 = 3,14 × r²
113,04 = 3,14r²
36 = r²
√36 = √r²
6 = r
K = 2 × π × r
= 2 × 3,14 × 6 cm
= 6,28 × 6 cm
= 37,68 cm
Jadi keliling lingkaran tersebut adalah 37,68 cm.