In a given circle of radius 14 cm. a rectangle is inscribed such that it has maximum area. Find that area.
a) 98 cm*cm
b)196 cm*cm
c)392 cm*cm
d)142.3 cm*cm

• here diagonal of rectangle i.e. D = 2R = 28cm
  now as we know that diagonals of rectangle are equal and divides itself perpendicularly so one side of triangle is 14cm and other to 14 cm
  now area of one triangle formed by diagonal = 1/2*14*14 =98cm2
  so there are four triangles so area of rectangle = 4*98 =392 cm2
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