0
Pi X Radius Squared
Divide By 2
Add Diameter/Length Of Base
The area of a semi circle is 1/2 x pi x r2
Area of circle is pi (3.14) x square of radius. Divide that by two to get half-circle.
First you figure out what the area would be if it were an entire circle using the formula pi times the radius squared. Pi = approx 3.1416. Then if you know the angle (in degrees) that creates the semi circle divide that number by 360. Then multiply that number by the area of the circle.
The formula for the area of a circle is A = πr2 where r is the radius and π (Pi) is the ratio of the circumference of a circle to its diameter.
The area of a semicircle is thus half this quantity = πr2/2
Pi r2 is the area of a circle so 1/2(Pi r2 ) is area of half circle
Add your answer:
Earn +20 pts
What is area of semicircle?
The area of a semicircle is half of the area of a circle. The area of a circle is pi x radius x radius. So the area of a semicircle is 1/2 x pi x radius x radius or (pi x radius x radius) / 2.
What is the area of a semicircle when the radius is 21?
The equation for area of a circle is A=pi x R x R. A semicircle is half a circle, so we calculate the area of a circle and divide by 2. The area of the circle would be approximately 1384.74. Thus the area of the semicircle would be 692.37.
How do you find the radius of a semicircle?
it is have the diameter
Area of a semicircle with a diameter of 8 cm?
25
What is the diameter of a semicircle?
In a semicircle, the diameter is the straight line. It is also equal to double the radius, and that property allows it to be used when calculating area and circumference.
What is the formula to find the area of a semicircle?
Pi*radius squared is how to find the area of a semicircle
How do you find the area of a semi-circle if you know the diameter?
A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.
What is the equation to solve the area of a semicircle?
Area of a semicircle = (pi*radius^2)/2
How do you find the area of a rectangle with a semi circle attached to it?
Calculate the area of a rectangle and of the semicircle separately, then add.
How do you find the area of circle when its half of the circle?
Find the area of the whole circle and divide by two. Area of semicircle = 0.5*pi*r2, where pi = 3.14159 and r is the radius
What is the area of the semicircle if the length of the arc of a semicircle is 10 and pi feet?
It is 27.49 units.
What is area of semicircle?
The area of a semicircle is half of the area of a circle. The area of a circle is pi x radius x radius. So the area of a semicircle is 1/2 x pi x radius x radius or (pi x radius x radius) / 2.
What is the area of a semicircle when the radius is 21?
The equation for area of a circle is A=pi x R x R. A semicircle is half a circle, so we calculate the area of a circle and divide by 2. The area of the circle would be approximately 1384.74. Thus the area of the semicircle would be 692.37.
How do you find the diameter of a semicircle when radius is given?
The diameter of the semicircle will be twice the radius.
What is the area outside the triangle if the triangle is inscribed in a semicircle while the side length of triangle is 2underroot2?
Diameter of semicircle = 1 Area of semicircle = Pi/8 Area of triangle = 0.25 Area outside triangle = (Pi/8) - 0.25 = 0.1427 (rounded to 4th decimal).
How do you find the area of a rectangle inside of the enclose semicircle if the diameter is 28cm?
It can have any value up to 392 square cm.
How do you find the radius of a semicircle?
it is have the diameter
