Answer: 60 years
Step-by-step explanation:
Let x denotes the age of Demochares .
Time he spent as a boy = 
Time he spent as a youth = 
Time he spent as a man= 
Time he spent in dotage= 13 years
As per given , we have the following equation:

[Take LCM]





Hence, he is 60 years old.
The answer to your question is c
you just muliply 16 by 4 i
Answer:
40yd
Step-by-step explanation:
area of total minus unshaded portion