Multiply 1.07 by 20,100
You will get 21,507
The radius of Matilda's bracelet is 2.784 inches
Step-by-step explanation:
Given,
The circumference of Matties bracelet is = 7 inches
The bracelet of Matilda is 2.5 times of Matties's bracelet
So, the circumference of Matilda's bracelet = 2.5 × 7 inches = 17.5 inches
To find the radius of Matilda's bracelet
Formula
The circumference of circle of radius(r) = 2πr inches
According to the problem,
2πr = 17.5
or, r = 
= 2.784 inches (approx)
A pentagon is a closed 5 sided polygon.
A regular polygon has all sides equal as well as all angles equal.
°The formula to find the sum of all angles of a polygon is = (n-2) ×180
So for a pentagon, n= 5
So the sum of all the angles must be (5-2)× 180= 3 × 180 = 540.
Now as it is a pentagon, it shall have 5 vertices.
So there are 5 angles in a pentagon and all must be equal.
Hence each interior angle must be 540/5 = 108
So for a regular polygon with 5 sides must have each interior angle = 108
Answer: C: y = 4x + 20
Step-by-step explanation:
4x is multiplying 4 by the number of levels, and you add the castles he's already found which is 4*5 =20.