Question

find this please ,its urgent....​

Answer 1

Option a

17 is the answer

Hope this is helpful

Answer 2

Answer:

option A) 17cm

Step-by-step explanation:

in triangle ABD

$AB^2 = AD^2+BD^2 \\ {10}^{2} = {6}^{2} + BD^2 \\ BD = \sqrt{100 - 64} \\ = > BD = \sqrt{36 } = 6cm$

in triangle BDC

$BD^2+CD^2=BC^2 \\ {8}^{2} + {15}^{2} = BC^2 \\ = > BC = \sqrt{ {8}^{2} + {15}^{2} } \\ = \sqrt{64 + 225} = \sqrt{289} = 17cm$

therefore BC= 17cm