10×2=20.
80÷20=4.
karena sisinya 4.jadi=4×4=16.diagonalnya 16cm
luas : 80 cm²
diagonal1 : 10 cm
diagonal2 : ?
jawab :
diagonal2 : 80 × 2/10
= 160/10
=16 cm
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10×2=20.
80÷20=4.
karena sisinya 4.jadi=4×4=16.diagonalnya 16cm
luas : 80 cm²
diagonal1 : 10 cm
diagonal2 : ?
jawab :
diagonal2 : 80 × 2/10
= 160/10
=16 cm