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

Bottema's Theorem
Linear Cross Section Exercise
Ellipse as Envelope - Correspondence Method
Construct a Square
cylinder net slider

Discover Resources

ทฤษฎีบท
Polar and Rectangular Coordinates
Cassini
Fraction Book
cilindricas

Discover Topics

Ellipse
Ratios
Polynomial Functions
Multiplication
Subtraction