Penjelasan:
AB = akarAD²+ DB²
= akar 12²+9²
= akar 144 +81
=akar 225 = 15cm
AB= 15Cm
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Penjelasan:
AB = akarAD²+ DB²
= akar 12²+9²
= akar 144 +81
=akar 225 = 15cm
AB= 15Cm