Gonzalez Manufacturing borrowed $36 comma 000. Part of the money was borrowed at 6%, part at 8%, and part at 10%. The annual interest was $2920, and the total amount borrowed at 6% and 8% was twice the amount borrowed at 10%. Use Gauss-Jordan elimination to find the amount borrowed at each rate.
d 25 pi/6
the diameter is 10 inches
the radius is 1/2 of the diameter or 5 inches
the area of the circle is
a = pi r^2
= pi 5^2
= 25 pi
the slice is 60 degrees of the entire circle.
60 degrees out of 360 60/360 = 1/6
the area of the slice is 1/6 of the circle
a slice = 1/6 a circle
a slice = 1/6 * 25 pi