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2. How do you find the perimeter of a 3/4 circle? - Socratic

   socratic.org/questions/how-do-you-find-the-perimeter-of-a-3-4-circle

   For the perimeter of a #3/4# th circle, we will add three quarters the perimeter of the full circle with twice the length of the radii.

3. Perimeter of a semicircle? - Socratic

   socratic.org/questions/perimeter-of-a-semicircle

   #"the perimeter (P ) or circumference of a circle is"# #color(red)(bar(ul(|color(white)(2/2)color(black)(P=2pir=pid)color(white)(2/2)|)))#

4. What is the perimeter of a triangle, who has a circle ... -...

   socratic.org/questions/what-is-the-perimeter-of-a-triangle-who-has-a-circle...

   See explanation. If you want a numeric answer , I'm sorry you can't have one. There could be simply so many triangles with radius of incircle as 4.2 cm. However we have a relation. r*p/2=triangle (where r is radius and p is perimeter and triangle is area of triangle)

5. How to find the perimeter of a race track? - Socratic

   socratic.org/questions/how-to-find-the-perimeter-of-a-race-track

   ~418.78m = perimeter of the race track First, find the perimeter of the rectangular shape on the inside. 62m (2 sides) + 100m (2 sides) 124 + 200 = 224m, perimeter of the rectangle C = pid C = 62pi Two half circles = 1 whole circle: 62pi 62pi + 224 = ~418.77874452257m

6. What is the circumference of a circle when the diameter is 18?

   socratic.org/questions/what-is-the-circumference-of-a-circle-when-the-diameter...

   The answer is 56.57. In the process, Diameter= 18, Radius(r)= (18)/2 :. Radius= 9 Now, Circumference (Perimeter) = ? According to the formula, Perimeter= 2 xx (22)/7 xx r Taking the equation, Perimeter= 2 xx (22)/7 xx r rArr2 xx (22)/7 xx 9 rArr (396)/7 rArr 56.57142857 rArr 56.57 Let's hope this helps you:)

7. What is the formula for the radius of a semi-circle? - Socratic

   socratic.org/questions/what-is-the-formula-for-the-radius-of-a-semi-circle

   If given the area: The normal area of a circle is A=pir^2. Since a semicircle is just half of a circle, the area of a semicircle is shown through the formula A=(pir^2)/2. We can solve for r to show an expression for the radius of a semicircle when given the area: A=(pir^2)/2 2A=pir^2 (2A)/pi=r^2 r=sqrt((2A)/pi) If given the diameter: The diameter, like in a normal circle, is just twice the ...

8. B is 34 mm from the center of circle O, which has a radius ... -...

   socratic.org/questions/b-is-34-mm-from-the-center-of-circle-o-which-has-a...

   B is 34 mm from the center of circle O, which has a radius of 16 mm. Line BP and line BR are tangent segments. Line AC is tangent to circle O at point Q. Find the perimeter of ABC? Geometry

9. How do I find the radius of a circle from its circumference?

   socratic.org/questions/how-do-i-find-the-radius-of-a-circle-from-its-circumference

   r = C/(2pi) The Circumference of a circle goes with this formula; C = 2pir Where'; C = "Circumference" pi = 22/7 or 3.142 r = "radius" Hence you can find the radius of the circle from the circumference..

10. What is the area formula for a half circle? - Socratic

    socratic.org/questions/what-is-the-area-formula-for-a-half-circle

    If a semi circle has a diameter of 4cm then what is the perimeter? A painting measures 12 inches by 16 inches and is surrounded by a frame of uniform width around... A clear plastic prism has six faces, each of which is a parallelogram of side length 1 meter.

11. How do you find diameter from the circumference of a circle?

    socratic.org/questions/how-do-you-find-diameter-from-the-circumference-of-a-circle

    Write the equation of a circle with a center at (-3,-4) and a radius of 3? What is the perimeter of a quadrant of a circle with radius 3cm? I am installing a 1 yard-wide walk around circular swimming pool that is 21 ft in diameter.