Answer:
90
Step-by-step explanation:
Remeber there are 180 degress in a right triangle.
First, find the fraction of the circumference represented by central angle 7pi/8:
7pi/8
--------
2pi
Then find the circumference; it is C = 2 pi r, or 2pi(6), or 12 pi units
Then the arc length is 7pi/8 7
-------- * 12 pi = -------- units, or 21/4 units, or 5 1/4 units.
2pi 16 pi
Step-by-step explanation:
sin 65=p/h
0.906=4/x
0.906x=4
x=4/0.906
x=4.41
hope it helps.
The ratio, r, is 20 - 13 = 27 - 20 = 34 - 27 = 7;
The nth term has the formula: an = a1 + (n-1) x r; where, a1 = 13 and r = 7;
Then, an = 13 + (n-1) x 7;
Finally, an = 13 + 7 x n - 7;
an = 7 x n + 6;
It seems the shape of the cross section would be a trapezoid. Think of it this way. Take any pyramid you can visualise and cut straight down through it but not through the pointy tip(apex) I suppose the shape would be a trapezoid.