~Ling
K = 2π r
220 = 2πr
r = 110 / [22/7]
r = 35 cm
Maka Luas Juring yang diarsir :
L = [72/360] × L
L = 1/5 × πr²
L = 1/5 × 22/7 × 35 × 35
L = 22 × 35
L = 770 cm²
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~Ling
K = 2π r
220 = 2πr
r = 110 / [22/7]
r = 35 cm
Maka Luas Juring yang diarsir :
L = [72/360] × L
L = 1/5 × πr²
L = 1/5 × 22/7 × 35 × 35
L = 22 × 35
L = 770 cm²