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I assume you mean the formula as used in a spreadsheet?
Place the formula in cell A4
=SUM(A1:A3)
or you can use =Sum(A1+A2+A3) - This is a loger way of doing it but for someone new to calculations in spreadsheet cells its easier to check and edit if you need to change a cell reference.
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What is the formula to find the sum of interior angles of a polygon?
The formula to find the sum of interior angles of a polygon is 180° × (n - 2), where n is the number of sides of the polygon.
What is the formula to find the sum of exterior angles of a polygon?
it always equals to 360
What is the formula used to find the sum of the angle measures in an n-gon?
The formula is (n-2)x180 over n =x
Sum of angles of a nonagon?
The sum of the interior angles of a nonagon is 1260 degrees. A nonagon is a nine-sided polygon in geometry. The formula to find the sum of interior angles in a polygon is given by the formula [n-2] x 180 degrees, where n represents the number of sides.
What is the sum of interior angles in a heptagon?
the sum of interior angles in a heptagon is = 900 For any 'n' sided figure , you can find out the sum of interior angles by a formula : (n-2) * 180 where n= no of sides
