Ok what i got was 2.666666666666666666666 or 2.6 repeating
Answer:
3 cm
Step-by-step explanation:
First, find the volume of the cone.
V = r²h
V = (3.14)(9)(12)
V = 113.04
This means the sphere is also 113.04
Use the formula V = r³
113.04 = (3.14)r³
113.04 = 4.19r³
26.98 = r³
3 ≈ r
In order to figure this out, you are going to do the math backwards. If the perimeter of the entire field is 96 meters, you will want to remove 16, which will give you 80 meters. You will then divide this by 2, giving you 40 meters. The width of the field will be 40 meters. That means that the length of the field is going to be 56 meters.
Think of it like a triangle.
The flagpole is vertical and is at 90° to the ground. This makes a right-angle to the ground, which is flat.
Since we have two sides of the triangle already, and they are in a ratio of ?? : 16 : 20 = ?? : 4 : 5, that means that because the triangle is a right-angled triangle, the third and last side must be 3 to complete the ratio! (This is called 'Pythagoras')
Since the other sides were divided by 4 to get the simple ratio, we must multiply 3 to get the actual ratio!
3 × 4 = 12 ft tall flagpole.
since brians shadow is 2/3rds his height
4 / 6 is 2 /3
20 / 30 is 2 / 3 too so flag pole must be 30 feet tall