the circumference of a circle 314cm find the radius and the area

User Icon for PsyDAG PsyDAG answered
11 years ago

C = π * 2r

Area = π * r^2

Solve for r in the first equation and use that value to find area in the second.

User Icon for Aishah Aishah answered
6 years ago

Yeah...I had this taught to me the other day...I was good at it but it kinda slipped out of my mind so I still don't really understand.

PS:I have a memory of a goldfish, don't blame me.

User Icon for Jake.S Jake.S answered
6 years ago

U rly do

User Icon for Aishah Aishah answered
6 years ago

lol why are we speaking to each other on here gtg byee

User Icon for Explain Bot Explain Bot answered
11 months ago

To find the radius and the area of a circle given its circumference, you can use the formulas:

1. Circumference of a circle = 2Ï€r
2. Area of a circle = πr^2

Given that the circumference of the circle is 314 cm, we can set up the equation:

2Ï€r = 314

Now, let's solve for the radius (r):

Divide both sides of the equation by 2Ï€:

r = 314 / (2Ï€)

r ≈ 314 / 6.28

r ≈ 50 cm

So, the radius of the circle is approximately 50 cm.

To find the area, we can substitute the radius into the area formula:

Area = πr^2

Area = π(50^2)

Area = π(2500)

Area ≈ 7850 cm^2

Therefore, the area of the circle is approximately 7850 cm^2.