(number of sides-2)*180 = sum of interior degrees
The "Sum" formula works best.
(n-2)(180) use that formula to find the sum of the interior angles of a polygon in degree
Use the formula for the sum of an arithmetic sequence. Start with 11, end with 99; the interval is 2.
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.
The sum of the first 20 even numbers... is 110
You need a formula. That formula can use the Sum function or it could use the plus sign, or several plus signs and even several Sum functions. Primarily it is the Sum function and the plus sign that is used for sums.
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.
You use the relevant formula.
=sum(current/4*)
If you have numbers in cells B1 through B134, use the formula: =SUM(B1:B134). You can use auto sum to insert the formula by highlighting the column (you can click on the column letter) and clicking the AutoSum button on the menu.
It is used in the formula for finding the sum of the interior angles of a polygon:- (n-2)*180 = sum of interior angles whereas 'n' is the number of sides of the polygon
Use a protractor or use the formula: (n-2)*180 = sum of degrees whereas 'n' is the number of sides of the shape or polygon