In the given figure, arcs have been drawn of radius 7cm each with vertices A, B, C
and D of quadrilateral ABCD as centres. Find the area of the shaded region consisting of the four sectors at the four vertices
in a quadrilateral sum of the interior angles is 360 degrees
so A+B+C+D =360 DEGREES
radius =7 cm
area of the sector = (theta /360)*pi* (r^2)
so sum of the areas of the sectors = ( (A+B+C+D) /360 )*pi *(r^2)
=(360/360)*(22/7)*7*7=84 square centimetre
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