Surface area of a triangular prism/ Most anticipated question KJSEA 2026

Learn how to calculate the Surface Area of a Triangular Prism the easy way! In this lesson for Grade 9 / Junior Secondary (KJSEA) and KCSE 2026, I will show you: How many faces a triangular prism has (2 triangular + 3 rectangular) The formula: Surface Area = 2 x Area of triangle + Perimeter of triangle x Length Step by step worked example Common mistakes to avoid This question is a must-know for KJSEA 2026 Maths and KCSE 2026. Watch till the end, practice, and comment your answer. Subscribe for more Mensuration lessons. #triangularprism #surfacearea #grade9maths #kjsea2026 #kcsemaths