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If you have the diameter, then the formula for the area of a semi-circle is:
(pi x (diameter/2)2)/2
That is,
- Divide the diameter in two to find the radius (diameter/2)
- Square the radius (radius x radius)
- Multiply it by pi (3.1416)
- Divide the answer by two to find half the circle.
- Remember your units. The answer will be in square inches, or square centimeters or square somethings.
What else can I help you with?
I dont have any vertices what am i?
Sphere
How many sides on a circle?
i dont think there is a side
Ball is to Circle as Box is to?
cube
What is the greatest number of parts a circle can be cut into by 7 straight cuts?
Providing that the cuts dont overlap each other then the circle will be divided into 8 parts
In the formula V equals Bh what does the B stand for?
If it's a capital B then it means the area of a base but if it's a lowercase b the it mean just the base
What is the formula for pye?
The formula for pi (π) is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The formula for the area of a circle using pi is A = πr^2, where r is the radius of the circle.
How do you find are of circle?
to find the Area just multiply 3.14 by the radius times itself...if u dont understand its MLE (my lame English)
How do you find the radius of a circle if you dont know the circumference?
Well, if you know the diameter you divide that by two to get the radius.
What is a rule for finding the radius of a circle when you know the diameter?
Help i dont know
What would be the radius of a circle with a width of 12 feet and length of 10 feet?
circles dont have lengths or widths
What is area hexagon of radius 7 cm?
Cmon dont be lazy and do some maths
Why is the formula for finding the surface area of a rectangular prism helpful?
its not i dont no why
How do you figure out the radius when you dont know the shape?
You times pie by the radius but you cant if you dont know the shape.
I have a maths question i dont get please help me!"Describe fully the graph which has the equation x² + y² = 16."?
It's a circle. The equation of a circle is x^2+y^2=r^2. So the equation you've given is a circle with a radius of 4 and, since there are no modifications to the x or y values, the center of the circle is located at (0,0).
To calculate developed length of pipe how?
what is the formula for finding the developed of pipe bending the radius is given i dont know.. i m searching for answer but it is not showing. plz someone help me on this.....
What is the radius of an expanding circle at the moment when the rate of change of its area is numerically twice as large as the rate of change of its radius?
i dont know im only 5 A better answer: I assume you are taking differential calculus? A = (pi) R^2 dA/dt = 2 dR/dt cross multiply and find dA/dR = 2 dA/dR = 2 pi R = 2 R = 1/pi
What is neon's atomic radius?
i dont know sorry
