Answer:
Triangle QRS is an isosceles triangle because QR = RS.
Step-by-step explanation:
option D for Edgu hope this helps :)
It is a infinitive number that is internity (goes on forever and ever)
Since the central angle of the sector of the circle is in degrees, we need to convert it to radians, so we are going to use the formula for the area of a circular sector:

where

is the area

is the radius

is the central angle
We know form our problem that the radius of the sector is 5 in, so

. We also know that the sector's angle is 30°, so

. Lest replace those value sin our formula:

We can conclude that the expression we should use to calculate the area of the sector in the circle is:
X=10
4 squared + 8 squared
16 + 64
100
square root of 100 is 10