Question

find perimeter by measuring lengths mastery check

Explanation:

Step1: Measure bottom - base length

By reading the horizontal ruler, the bottom - base length is 12 cm.

Step2: Measure top - base length

By reading the horizontal ruler, the top - base length is 6 cm.

Step3: Measure one non - parallel side length

By reading the slanted ruler, one non - parallel side length is 3 cm. Since the trapezoid is isosceles (assumed from symmetry in the absence of other information), the other non - parallel side length is also 3 cm.

Step4: Calculate perimeter

Perimeter \(P=12 + 6+3 + 3\).
\(P = 24\) cm.

Answer:

24