Answer:
The answer is C or the third one
Step-by-step explanation:
The approximate margin of error is 4%.
Using the formula given and our information, we have:
For side length s, the area of a square is given by
... A = s²
Then the side length can be found to be
... s = √A = √(506.25 ft²) = 22.5 ft
The perimeter is the sum of the lengths of the four equal sides.
... P = 4s = 4·(22.5 ft) = 90 ft
Stevan will need 90 ft of fence to complete the job.
Answer:
x = 129.9 degrees to the nearest tenth.
Step-by-step explanation:
The largest angle will be opposite the longest side (20 in). So by the Cosine Rule:
20^2 = 9^2 + 13^2 - 2*9*13 cos x where x is the largest angle.
cos x = (20^2-0.640 - 9^2 - 13^2) / (-2*9*13)
cos x = -0.641025641
x = 129.87 degrees.
There are 144 inches in 12 feet
Hope this helps :)
