Answer:
The complete subject of the following sentence is __old radio_______
the simple subject is _radio________
Explanation:
old is the modifier
A simple subject is the main word or words in a subject. It does not include any of the modifiers that might describe the subject. To identify the simple subject in a sentence, ask yourself who or what performs the action in the sentence. Remember, though, that a simple subject is very basic.
Using the formula:

Which is, 3.14 x 2^2 (radius is half of diameter)
Which equals 12.56.
Maybe when the writer uses italics in their righting, or if a character is saying something, they show the tone. If context could help, pay attention to that :)
Music in Southeast Asia is frequently related to ceremonies connected with religion, the state, community festivals, and family affairs.