what is the formula for finding the perimeter of a sector of a circle?
243822
The perimeter of a circle is known as the circumference. To calculate the circumference of a circle you can use one of two formulae, either: C = 2πr or C = πd. In these formulae r is the radius and d is the diameter. C = π X d (3.14159 x 10) = 31.42 (to 4 s. f.)
1196120
['d=2πr and r=12d.', 'Circumference of a circle (c)=2πr.', 'Area of a circle (A)=πr2.']
456455
['The perimeter of a shape is the length around the outside of that shape. ... ', 'A triangle has three sides, a, b, and c. ... ', 'P = a + b + c.', 'P = 3 + 4 + 5 P = 12.', "The Pythagorean Theorem is a formula that shows the relationship between the lengths of a right triangle's sides.", 'a^2 + b^2 = c^2.']
1365225
['If it is a square, the sides would be approximately 209 fet long and you would need 4. ... ', 'If it is a circle then the perimeter is 740 feet.']
684699
Perimeter of a Semicircle The formula for a circle's circumference, C, is C = 2 * pi * r, where r is, again, the circle's radius. A semicircle is half a circle, however, so we'll need to divide the formula for perimeter by two just like we did the formula for area. The perimeter P = pi * r.
280
Perimeter of sectors is calculated by adding all of the sides together. As part of a filled-in circle, a sector has three different sides that make up its outside edge. Two of them are radii, or segments of lines that extend from the center out to the edge of the circle. The third part is the arc, the curved part.
1275091
You could only do that when all your sides lengths are equal. Say you have a octagon with equal length of sides = 5 , then you could find the perimeter by multiplying the number of sides by the length. In this case, 8 x 5 = 40. But if all your sides are not equal then you have to add them one by one.
298417
['Plot the coordinates. The first number tells the x value while the second number is the y value. ... ', 'Connect the dots and identify the figure. The connected points show a square.', 'Determine lengths. By counting the grid lines we see that the sides = 3.', 'If a formula exists, use it to find the perimeter and the area.']
240771
To find the perimeter of a regular hexagon you must first know the number of sides in a hexagon which is 6. When you know the number of sides of a regular polygon to find the perimeter you must multiply the side length by the number of sides. The answer for the perimeter is .
46755
To find the perimeter of a regular polygon, we take the length of each side, , and multiply it by the number of sides, . In a nonagon the number of sides is , and in this example the side length is .
335349
To find the perimeter of the quarter circle, find the circumference of the whole circle, divide by 4, and then add the radius twice. To find the radius when you are given the area of the quarter circle, multiply the given area by 4, then plug this number in for A into the formula A = pi * r^2 and then solve for r.
448455
Find the equation of a circle using the centre and radius. To find the equation of a circle when you know the radius and centre, use the formula ( x − a ) 2 + ( y − b ) 2 = r 2 , where represents the centre of the circle, and is the radius.
332695
For the circular cylinder there are the following formulas: The perimeter p is 2·Pi·r (this is the formula for the perimeter of the circle), the base area AB is Pi·r² (this is the formula for the area of a circle), the lateral surface is perimeter times height, AL = p·h and therefore AL = 2·Pi·r·h, the surface area ...
698278
['For a square with side length s , the following formulas are used.', 'Perimeter = 4s.', 'Area = s2.', 'Diagonal = s√2.', 'For a circle with radius r , the following formulas are used.', 'Circumference = 2πr.', 'Area = πr2.']
1107350
Multiply the side length by the number of sides to get the perimeter. The formula for finding the perimeter of a regular polygon is just the number of sides x the length of any side. Once you've multiplied those 2 numbers together, you've found the perimeter of the polygon!
1100570
If you know the area and want to find the minimum perimeter possible, take the square root of the area to find the length of each side. Then, multiply the side length by four to find the total perimeter.
125206
The perimeter of a circle is π × d where d is the diameter so half of that is 1/2 π × d. But If you are going to walk around a semicircle you need to go half way around the circle and then across a diagonal to get back to where you started so the perimeter is 1/2 π × d + d.