Given:
Circumference of a circle = C
Diameter of a circle = d
To find:
The relationship between the circumference, c, and diameter, d, of any circle.
Solution:
We know that, circumference of a circle is

It can be written as

![[\because d=2r]](https://tex.z-dn.net/?f=%5B%5Cbecause%20d%3D2r%5D)
On dividing both sides by d, we get

Therefore, the correct option is (F).
1) First, you have to add all the 3 pieces of wood
10+7.5+12= 29.5 ft.
Second, you have to add the pieces that he has used
5.2 +6.2= 11.4 ft
Third, you have subtract the used wood from the whole wood to get how many feet he didn't use
29.5 - 11.4=18.1 ft.
I hope it helped. But, sorry don't know how to do number 2.
The answer would be -20 because you add and subtract your numbers to get 20
Answer:
volume of the cone = 247.98 cubic meter
Step-by-step explanation:
Height of the cone= 11.7 m
Circumference= 9 m
Radius= 9/2= 4.5 m
Volume of the cone;
=
As, 
Putting the values in the formula:
Volume of the cone is:

The volume of the cone is 247.98 cubic meter
24 sponge fingers and 420 jelly