Jawaban:
Lp=2ñr(r+t)
=2 × 22/7 × 12 ×(12+22)
=88 + 34
=122 cm²
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Jawaban:
Lp=2ñr(r+t)
=2 × 22/7 × 12 ×(12+22)
=88 + 34
=122 cm²