Practising substitution - Heron's formula

Last updated: 15/11/2023
Contributor: David Benjamin 🐝
Practising substitution - Heron's formula
Main Subject
Key stage
Category
Algebra: Algebraic skills
Inside
Includes answers
Resource type
Student activity

A short but challenging activity for GCSE. Use Heron's formula for calculating the area of any triangle, given its sides a, b, c,

A = sqrt[s(s-a)(s-b)(s-c)], where s = 1/2 (a + b + c)

to find some triangle areas and then the area of a hexagon.

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