Question

cm
c) 0
d) 1
8. In AABC, LABC = 90°, BD AC. If
BD = 8cm, AD = 4cm then the length
of CD is.
a) 8
b) 16
c) 12
d) 22
katariya drashty please come online​

Answer 1

Answer:

b) 16 cm

Step-by-step explanation:

By geometric mean,

${(BD)}^{2} = AD \times DC \\ {8}^{2} = 4 \times \: DC \\ 64 = 4 \times DC \\ DC = 64 \div 4 \\ DC = 16$