Luas = 1/2 luas ling besar - luas ling kecil
= 1/2. 22/7. 28. 28 - 22/7. 7. 7
= 1232-154
= 1078 (B)
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Luas = 1/2 luas ling besar - luas ling kecil
= 1/2. 22/7. 28. 28 - 22/7. 7. 7
= 1232-154
= 1078 (B)