the circumference of a circle 314cm find the radius and the area
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.
U rly do
lol why are we speaking to each other on here gtg byee
To find the radius and the area of a circle given its circumference, you can use the formulas:
1. Circumference of a circle = 2πr
2. Area of a circle = πr^2
Given that the circumference of the circle is 314 cm, we can set up the equation:
2πr = 314
Now, let's solve for the radius (r):
Divide both sides of the equation by 2π:
r = 314 / (2π)
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.
C = π * 2r
Area = π * r^2
Solve for r in the first equation and use that value to find area in the second.