Answer: A . 16.1
Step-by-step explanation:
In the figure we have a right triangle in which one of the leg's length is missing.
- Pythagoras theorem of right triangles says that the square of hypotenuse is the sum of the squares of the two legs.
For the given triangle , we have[tex](18)^2=b^2+8^2[/tex]
i.e. [tex]\Rightarrow\ 324=b^2+64[/tex]
i.e. [tex]\Rightarrow\ b^2=324-64[/tex]
i.e. [tex]\Rightarrow\ b^2=260[/tex]
i.e. [tex]\Rightarrow\ b=\sqrt{260}=16.1245154966approx16.1[/tex]
Hence, the missing side = 16.1 units
