#100 · 2D measurement · Classes 6–12
Real-life Applications
Mathematics in buildings, bridges, wheels, money and science. Shown: a parabolic arch bridge.
Real-life Applications📐 Formula
Arch: y = rise × (1 − (2x/span)²), a parabola with vertex at the top
✏️ Worked example
Span 40 m, rise 10 m: at 10 m from the centre the arch is 10 × (1 − 0.25) = 7.5 m high.
🌍 Where it is used
Engineering, finance, medicine, sport and computing.
❓ Quick check
A parabolic arch is strong because loads follow…