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r = 1/2d = 1/2 x 14 =7 cm
L = 3πr²
= 3 x 22/7 x 7²
= 462 cm²
r=14:2
r=7
LL=π x r x r
LL= x 7 x 7
LL=22 x 7 x 7:7
LL=154:2(di bagi 2 karena setengah)
LL=77cm²
maaf kalo salah soory