What is the formula for finding semicircle?
The formula for finding the area of a semicircle is:
Area = (π * r²) / 2
Where:
- π (pi) is a mathematical constant approximately equal to 3.14
- r is the radius of the semicircle
The formula for finding the area of a semicircle depends on whether you want to find the area or the circumference. I'll provide both formulas:
1. To find the area of a semicircle, you can use the formula:
Area = (π * r^2) / 2
where π (pi) is approximately 3.14159 and r is the radius of the semicircle.
2. To find the circumference of a semicircle, you can use the formula:
Circumference = (π * r) + (2 * r)
or simply
Circumference = π * (r + d)
where π (pi) is approximately 3.14159, r is the radius of the semicircle, and d is the diameter of the semicircle.
Note that the diameter (d) of a semicircle is twice the radius (r), so you can substitute d = 2r in the formulas if you know the diameter.