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= 44 × 14
= 616 cm
B. Luas = 3,14 × 10 ×10
= 314 cm
1
---- × diameter
2
1
--- × 28 = 14
2
b. r= 10 cm
3,14 × r × r
3,14 × 10 × 10
=314
maaf y kalo salah