railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Mensuration Plane Figures
Find the area of the shaded portion of an equilateral triangle with sides 6 units shown in the following figure. A circle of radius 1 unit is centred at midpoint of a side of the triangle.
1
\(\frac{1}{2}\left( {9\sqrt 3 - \frac{{11}}{7}} \right)~\) unit2
2
\(\frac{1}{4}\left( {9\sqrt 3 - \frac{{11}}{7}} \right)~\) unit2
3
\(\frac{1}{2}\left( {6\sqrt 3 - \frac{{11}}{7}} \right)~\) unit2
4
\(\frac{1}{2}\left( {9\sqrt 3 - \frac{{22}}{7}} \right)~\) unit2