Answer:
It should be A
Step-by-step explanation:
I hope this helps
The first thing to do is find the rectangular warehouse area.
We have then:
A = (12) * (18) = 216
A = 216 m ^ 2
We now look for the area of each acoustic tile square:
A '= (1) ^ 2 = 1
A '= 1 m ^ 2
We look for acoustic tile squares number:
N = (A) / (A ')
N = (216) / (1)
N = 216
Finally we look for the total weight:
W = (1/4) * (216)
W = 54 Kg
Answer:
The total weight of the tile required to cover the ceiling is:
W = 54 Kg
Multiply the amount of pages by the amount of words per page:

There are about 287000 words remaining.
Courtney can read at a rate of 110 words per minute. Since we want to find the amount of hours she needs to finish the book, multiply this rate by 60 to convert into an hour:

Courtney reads at a rate of 6600 words per hour.
Divide the amount of words in the book by Courtney's reading speed in hours:

Courtney will need to set aside 43.48 hours to complete her assignment.
Answer:
20.354 inches
Step-by-step explanation:
1 inch = 2.54 cm
We have 51.7 cm
51.7 cm 1 inch
----------- * ----------- = 20.35433071 inches
1 2 .54 cm
We need to round to the nearest thousandths (3 decimal places)
20.354 inches