100 Most Beautiful Secret Areas in China

100 Most Beautiful Secret Areas in China

Matematika tolongg kak bantuin uangg ini jan ngasal auto report, kelas 8​ pakee cara yaa

tolongg kak bantuin uangg ini jan ngasal auto report, kelas 8​ pakee cara yaa

70 cm

Penjelasan dengan langkah-langkah:

AB² = AO² + BO²

= 9² +12²

= 81 + 144

= 225

AB = √225 = 15 cm

AD = AB = 15 cm

BC² = BO² + OC²

= 12² + 16²

= 144 + 256

= 400

BC = √400 = 20 cm

CD = BC = 20 cm

K = 15 + 15 + 20 + 20

= 70 cm