Question

find the perimeter when 118 triangles are put together in the pattern shown below. assume that all triangle sides are 1 cm long. the perimeter is cm

Explanation:

Step1: Observe the pattern

For 1 triangle, perimeter = 3 cm. For 2 triangles, perimeter = 4 cm. For 3 triangles, perimeter = 5 cm.

Step2: Find the formula

The perimeter \(P\) of \(n\) triangles in this pattern is \(P=n + 2\).

Step3: Calculate the perimeter for 118 triangles

Substitute \(n = 118\) into the formula \(P=n + 2\), so \(P=118+2=120\) cm.

Answer:

120