Joe jumped the farthest at 6 1/4 (6 ft 3 in)
Chelsey jumped the shortest ar 4 1/5 (4 ft 2.4 in)
6-4=2
3-2.4=.6
the difference is: 2 ft and 0.6 in
Answer:
(a) 
Step-by-step explanation:
The question is incomplete. (See comment for complete question).
From the completed question, we have:

--- number of pyramids
Required
An expression for the area of the base
The total base length of the pyramid represents the perimeter of the base.
And since the base is a square, then the following relationship exist.

Where L represents the length of each side.
This gives

Make L the subject

The area of the base is then calculated as:


<span>Angle T = Angle C, let them equal x
So x + x + 140 = 180
2x = 40
x = 20
So Angle T = 20 degrees </span>
1 yard=3 feet so 100 yard=300 feet
Answer : 3.4
Explanation: 12.6 x 15.2= 191.52
651.168 / 191.52 = 3.4