**How to find the angle of a sector using the area and**

Finding the angle at centre In order to derive the formula to calculate the angle at the centre of the sector, the formulae for the arc length and area of a sector can be rearranged so that we can... Finding the angle at centre In order to derive the formula to calculate the angle at the centre of the sector, the formulae for the arc length and area of a sector can be rearranged so that we can

**How do you find the area of a sector of a circle? StudyPug**

27/01/2009 · You know the circumference of the circle is 2pi x r = about 37.7 there are 360 degrees in a circle and your arc goes for 8.4/37.7 of the total, so multiply 360 * 8.4/37.7... The following video shows how this formula is derived from the usual formula of Area of sector = (Ө/360˚) X πr². Just replace 360˚ in the formula by 2π radians (note that this is exactly converting degrees to radians). Then, simplify the formula and the formula for area of sector when angle Ө is in radians will then be derived as Area = (1/2) X r²Ө.

**Work out angle in a sector? Yahoo Answers**

When the centre dot isn't inside your triangle, you might find it a little trickier to work out the angles. Click below for a diagram that might help: Click below for a diagram that might help: Many thanks to Geoff Faux who introduced us to the merits of the 9 pin circular geo-board.... The non-reflex angle AOB is called the angle subtended by the minor arc AB, and is also the angle subtended by the chord AB. The two radii divide the circle into two sectors, called correspondingly the major sector OAB and the minor sector OAB .

**How to find the angle of a sector using the area and**

3/02/2010 · We use the relationship that the length of an arc of a circle is: L = rx where r is the radius and x is the angle in radians subtended by the arc.... We can calculate the central angle subtended by a sector, given the area of the sector and area of circle. Example: The area of a sector with a radius of 6 cm is 35.4 cm 2 .

## How To Work Out The Angle Of A Sector

### How do you find the area of a sector of a circle? StudyPug

- How do you find the area of a sector of a circle? StudyPug
- How to find the angle of a sector using the area and
- how do i work out the angle of a sector in a circle
- Work out angle in a sector? Yahoo Answers

## How To Work Out The Angle Of A Sector

### the area of a sector = (angle)/360 x PI x radius x radiuspi r squared.

- The angle marked off by the original and final locations of the radius line (that is, the angle at the center of the pie / pizza) is the "subtended" angle of the sector. This angle can also be referred to as the "central" angle of the sector. In the picture above, the central angle is labelled as "
- 5/08/2011 · If you want a pragmatic test of your own, roll up a sheet of typing paper, cutting out a quarter circle of 8.5" (corresponding to the 13cm length) 8.5 is just about 2/3 of 13. Now, roll the paper into a cone, until the top opening has a diameter of 2/3 * 5.3, or about 3.5". Mark the spot where the top circle closes, unroll the cone, and measure the angle (less than the 90° you got from the
- The angle of a sector is proportional to the frequency of the data. The formula to determine the angle of a sector in a circle graph is: Study the following steps of constructing a circle graph or pie chart: Step 1: Calculate the angle of each sector, using the formula . Step 2: Draw a circle using a pair of compasses Step 3: Use a protractor to draw the angle for each sector. Step 4: Label
- In essence, they've given me the central angle of a sector and that sector's arc's length, and they've asked me for the radius. So I'll plug into the arc-length formula, and solve for what I need.

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