Question

9. In AABC, AD I BC (Fig. 10.29). Find
the length of BC.
А
13 cm
12 cm 13 cm
B
D
С
Fig. 10.29
1
ro​

Answer 1

Step-by-step explanation:

BD:

${13}^{2} = { {12}^{2} } + {x}^{2}$

$169 = 144 + {x}^{2}$

${x}^{2} = 25$

$x = \sqrt{25}$

$x = 5cm$

DC:

$x = 5cm$

BC:

$BC = 2 \times 5$

$= 10cm$

Answer 2

Answer:

Step-by-step explanation: