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:196cm2
Luas bulat: 1/4 × 22/7 × 14cm ×14Cm
:154 cm 2
Luas arsir:196 - 154 cm
:42 cm2 (kuadrat)
B.luas bulat
1/4 × 22/7×28cm×28cm
616 cm 2
Luas bulat 2:
1/2×22/7×14×14
308 cm2
616cm 2 -308 cm2
308 cm 2
b) Luas yg diasir=¼(22/7 x 28x28) - ½(22/7 x 14x14)=616-308=308 cm²