bantuanya mas mbak yang bisa...mohon mbtuan klian... mkasih

9.a=15+5 =20
   b=15
   x=√20²+15²=√400+225 = √625 = 25 cm

10.ab =√ca² - bc² = √ 40²-24² =√ 1600-576 = √1024 = 32 cm

      db=√cd²-bc² = √25²-24² = √ 625-576 = √49 = 7 cm

       ad = ab- db = 32 - 7 = 25 cm