Her average speed was 12 miles per hour. Total distance over total time.
By the Pythagorean theorem,
.. x^2 +(x -46)^2 = (x +4)^2
.. 2x^2 -92x +2116 = x^2 +8x +16
.. x^2 -100x +2100 = 0
.. (x -50)^2 -400 = 0
.. x = 50 ±20 . . . . . only x=70 makes any sense in the problem
The height, x, of the tree is 70 meters.
12.5 x 2 (you need the diameter to find pi) =25pi ft
Dude, this is simple addition. 28.35 + 17.26 = 45.61
He now has $45.61
It means break them down so u get just one factor
