Answer: c. 17.13 in
Step-by-step explanation:
Given : Length of pencil = 15.80 cm
There are 30.48 centimeters in a foot.
i.e. [tex]\text{ 1 cm}=\dfrac{1}{30.48}\text{ foot}[/tex]
i.e. Length of pencil (in foot)= [tex]15.80\times\dfrac{1}{30.48}[/tex]
Since 1 foot = 12 inches
Then, Length of pencil (in inches)= [tex]15.80\times\dfrac{1}{30.48}\times12[/tex]
[tex]6.22047244094\approx6.22\text{ inches}[/tex] (2)
Length of Candle = 0.303 yards
∵ 1 yard = 3 feet
Then, Length of Candle ( in feet)=[tex]3\times0.303[/tex]
1 foot = 12 inches
then, Length of Candle ( in inches)=[tex]3\times0.303\times12=10.908[/tex]
[tex]\approx10.91\text{ inches}[/tex] (2)
If the two items placed end-to-end, the total length will be :-
[tex]6.22+1091=17.13\text{ inches}[/tex] [Add (1) and (2)]
Hence, the best answer is c. 17.13 in .