Answers

2016-03-12T11:31:57+05:30
The area of an equilateral Δ = √3 a ²/4
 ⇒196 √3 = √3 a² /4
 ⇒a = 14
Therefore,r = a/2
                   = 28/2  = 14 m

We have to find the area of blue region
Therefore,
The area of Δ - area of three sectors (with r= 14 m and Ф = 60° )
⇒196 √3 - [3 (Ф \pi r²/360)]
⇒339.47 - (180  \pi  * 14 * 14/360)
339.47 - 308
⇒ 31.47 m ²
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