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Complete the hexagonal and star shaped ...

Complete the hexagonal and star shaped Rangolies [see Fig. 7.53 (i) and (ii)] by filling them with as many equilateral triangles of side 1 cm as you can. Count the number of triangles in each case. Which has more triangles?

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Let's find the area of `Δ OAB`
Area of an equilateral triangle of side 'a' is given by `sqrt3/4 a^2`
Area of `ΔOAB = sqrt3/4 (side)^2` ...
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