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Verified answer
K = phi x d44 = 22/7 x d
44 x 7 = 22 x d
308 = 22d
d = 308/22
d = 14
r = 7
L = phi x r x r
= 22/7 x 7 x 7
= 154 cm^2
maaf kalau salah
=2×π×r
44cm=2×22/7×r
44cm:2=22/7×r
22cm=22/7×r
r=22cm : 22/7
r=22cm × 7/22
r=7cm
Luas
=π×r²
=22/7×7cm×7cm
=22×7cm²
=154cm²
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