d2=2×√5²-4²
=2×√25-16
=2×√9
=2×3
=6 cm
Lbelah= d1×d2 :2
=16×6:2
=48 cm²
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d2=2×√5²-4²
=2×√25-16
=2×√9
=2×3
=6 cm
Lbelah= d1×d2 :2
=16×6:2
=48 cm²