Answer:

Step-by-step explanation:
we know that

step 1
Convert 15 foot 6 inch to feet

step 2
Find the area of the room
The area of the square room is

step 3
Find the cost

Ten times ten equals one hundred, if that's what you are asking for.
Answer:
I got y as 30 degrees thanks have a nice day
Should be the last one, 43, 52, 61.
Answer:
A. 27
Step-by-step explanation:
21 x 3 = 63
9 x 3 = 27