13 feet! 12 inches = 1 foot, and think of below ground as negative feet, so it’d be the difference between -1 and 12, which is 13!
Answer: 
Step-by-step explanation:
You need to use the following formula:

Where "r" is the radius and
is is the central angle of the arc in radians.
Assuming that that the angle
is the central angle of the arc, and knowing that the radius is 7 centimeters, you can substitute values into the formula.
Therefore, you get:

Answer:
143%
Step-by-step explanation:
x100=142.9%=143%
Answer:
4 1/4 × 3 × 1 1/4
Step-by-step explanation:
To find volume you need to do length×width×height
Answer:
90%
Step-by-step explanation:
50%×2 100%
5%×2 10%
45%×2 90%