Question

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Answer 1

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Answer 2

Answer:

Step-by-step explanation:

in triangle ABD,

according to Pythagoras theorem i.e.,

(9)$x^{2}$ + (AD)$x^{2}$= (15)$x^{2}$

225 – 81 = (AD)$x^{2}$

144 = $x^{2}$(AD)

AD=$\sqrt{x}$144

AD=12 m

in triangle BCD,

according to Pythagoras theorem i.e.,

(12)$x^{2}$ + (CD)$x^{2}$= (20)$x^{2}$

(CD)$x^{2}$ = 400-144

(CD)$x^{2}$ =256

CD = 256$\sqrt{x}$

CD=16 m