luas 1 = 1/2 x 3,14 x 60² = 5652cm²
Luas 2 = 1/2 x 3,14 x 30² = 1413cm²
luas 3 = 36/360 x 3,14 x 60² = 1130,4cm²
luas arsir
= 5652 - 1413 - 1130,4
= 3108cm²
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luas 1 = 1/2 x 3,14 x 60² = 5652cm²
Luas 2 = 1/2 x 3,14 x 30² = 1413cm²
luas 3 = 36/360 x 3,14 x 60² = 1130,4cm²
luas arsir
= 5652 - 1413 - 1130,4
= 3108cm²