Area and perimeter of triangle

Triangle: area and perimeter

Computes area and perimeter from sides

2026.Sep.04 19:35:06

a

Side A.

b

Side B.

c

Side C.

Area or perimeter

Select.

Uses Heron's formula.

Keywords: Area of trianghle; perimeter of triangle; .

References:

Plate: webTriFromExcel

This Excel file makes the calculations supplied by this web page. (This Excel file contains no macros.) This feature is provided by the Excel WEBSERVICE function. (Beware: its construction is not obvious.)

• Google: excel webservice

• Wikipedia: Heron's formula.

• 1789-08-21: Cauchy, Augustin Louis (†1857-05-23, 67 yrs.).