diameter of coin is 26 mm inlength.Find circumference & area of coin .
C = π * d
A = 1/4 * π * d^2
I'll let you do the calculations.
I'm really confused.Can't seem to getii.
C = 3.14 * 26
A = pi * r^2
A = 3.14 * 13^2
That will give you the area of one side of the coin.
To find the circumference and area of the coin, we'll use the formulae for a circle.
1. Circumference of a circle (C): It is given by the formula C = πd, where d is the diameter of the circle.
2. Area of a circle (A): It is given by the formula A = πr^2, where r is the radius of the circle.
Since you already have the diameter of the coin, which is 26 mm, we can calculate the circumference and area as follows:
Step 1: Calculate the radius (r):
The radius is half the diameter, so r = d/2 = 26 mm / 2 = 13 mm.
Step 2: Calculate the circumference:
Using the formula C = πd, substitute the value of d = 26 mm:
C = π * 26 mm.
To get the numerical value, we replace π with its approximate value, which is 3.14:
C ≈ 3.14 * 26 mm.
Calculate the value:
C ≈ 81.64 mm.
Therefore, the circumference of the coin is approximately 81.64 mm.
Step 3: Calculate the area:
Using the formula A = πr^2, substitute the value of r = 13 mm:
A = π * (13 mm)^2.
Again, replace π with its approximate value:
A ≈ 3.14 * (13 mm)^2.
Calculate the value:
A ≈ 530.66 mm^2.
Therefore, the area of the coin is approximately 530.66 mm^2.