- #1

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## Homework Statement

The cross-section of a gutter can be represented by the quadratic:

y=4/11x^2-4x+11 where x and y are measurements in cm. Calculate the width of the gutter where the depth is 6cms.

## Homework Equations

## The Attempt at a Solution

my answer was 1.26cm or 12.6mm but i'm pretty sure thats wrong so could someone please explain how to work it out?