Picture Perfect

Author:wotton.dorothea.18

The Problem:

A 9-by-12 rectangular picture is framed by a border of uniform width. Given that the combined area of picture plus frame is 180 square units, find the width of the border.

New Resources

Limaçons
Open Education 2026
General Polar Equation of Conics with Rotation (1)
Assistants (custom GPTs or Gemini Gems) for Math
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

Discover Resources

kp_wunderblume_worksheet.ggb
Points of Intersection 1
Hole #2
Vessel Length vs Froude Friction Coefficient [Reeds Volm 13 - p327]
Two Arm Spirograph with Bule Star

Discover Topics

Unit Circle
Hypothesis Testing
Tangent Function
Quadratic Equations
Natural Numbers