Question

which figure has a greater perimeter?
18.5 mm
11.1 mm
14.8 mm
13.2 mm
13.2 mm
13.2 mm
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Explanation:

Step1: Calculate perimeter of pink triangle

Sum its three sides: \( 18.5 + 11.1 + 14.8 \)
\( 18.5 + 11.1 = 29.6 \); \( 29.6 + 14.8 = 44.4 \) mm.

Step2: Calculate perimeter of green triangle

It's equilateral, so \( 13.2 \times 3 = 39.6 \) mm.

Step3: Compare perimeters

\( 44.4 > 39.6 \), so pink triangle has greater perimeter.

Answer:

The pink triangle (with sides 18.5 mm, 11.1 mm, 14.8 mm) has a greater perimeter.