Use area formulas for rectangles, triangles, parallelograms, trapezoids, and composite figures.
Turn a shape description into an area setup
Problem
A trapezoid has bases \(7~\text{cm}\) and \(11~\text{cm}\) and a height of \(4~\text{cm}\). Write an unsimplified expression for its area.
Big Picture
What this problem is really about
Translate the shape description into the trapezoid area structure before inserting any measurements. Keep both parallel bases grouped as a sum, apply the one-half factor to that sum, and multiply by the perpendicular height. Since an unsimplified setup is requested, stop after every given value occupies its correct formula role.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
