Shalini is making a triangular chart for her house competitions.The chart has the shape of an equilateral triangle of side $1.3 m$ .She needs to add a ribbon border around the entire chart.Find the length of ribbon that she needs.

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Solution

Step $1$ Given measure of equilateral triangular-shaped chart
Length of one side of equilateral triangular-shaped chart $= 1.3 m$
Step $2$ Finding the length of ribbon needed to border around the chart
Length of the ribbon that she needed to make a border around the equilateral triangle-shaped chart $=$ Perimeter of the equilateral triangle
Hence, the Perimeter of an equilateral triangle $= 3 \times$ length of one side
Perimeter $= 3 \times 1.3 = 3.9 m$
Hence, length of the ribbon needed to border around the equilateral triangle-shaped chart is $3.9 m$

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Shalini is making a triangular chart for her house competitions.The chart has the shape of an equilateral triangle of side 1.3m.She needs to add a ribbon border around the entire chart.Find the length of ribbon that she needs.

Shalini is making a triangular chart for her house competitions.The chart has the shape of an equilateral triangle of side $1.3 m$ .She needs to add a ribbon border around the entire chart.Find the length of ribbon that she needs.