Math Section · Study Guide

Geometry & Tape Measure

The Math section tests perimeter, area, circumference, and tape-measure reading to 1/16 inch — all by hand, no calculator. Learn the shapes, then the ruler, then lock everything in with worked examples.

Rectangles

A rectangle has four right angles. Opposite sides are equal. Hover the labels below to highlight each dimension.

L = 12 inW = 8 in

Perimeter = 2L + 2W = 2(12) + 2(8) = 40 in

Area = L × W = 12 × 8 = 96 in²

Keep reading — free account

Sign up free to finish the Math & Tape Measure guide

A free account unlocks the full study guide plus the free diagnostic. Email magic link, no password — takes about 30 seconds.

  • Full text of every study guide
  • Free diagnostic to find your weak areas
  • Save your score so you can track progress
Sign up freeRead the free Gears guide

No credit card. Free account covers the study guides.