Answer:
#i. π = 10/d
#ii. C/30=π
Step-by-step explanation:
#a. We are given;
- The circumference of a circle as 10 cm
We are required to show how the relationship between the circumference and the diameter can be used to find π.
we know that the circumference of a circle is given by;
Circumference = πd
But, circumference is 10 cm
Therefore;
10 cm = πd
Dividing both sides by d, then;
π = 10/d
#b. we are given;
We are given;
Radius of a circle = 15
We are supposed to express the ratio of circumference to the diameter;
We need to know that;
Diameter = 2 × radius
= 2r
Circumference = πd or
= 2πr
Therefore, the ratio of circumference to the diameter will be;
C=2πr
d=2r
C/d = π
But d =30
Thus; C/30 =π
=b+c