# In the give

Here in order to find the area of the shaded region we have to calculate the area, or the quadrant shown and subtract it from the area of the trapezium. And in order to find the area of the quadrant we have to calculate the radius of the sector EAB by the area of trapezium.

Given Area of trapezium ABCD = 24.5 cm2       eqn1

AD BC, AD = 10 cm, BC = 4 cm, DAB = 90°

Putting the values in equation 2, we get,

AB = 3.5 cm

Therefore radius of the sector EAB = r = 3.5 cm

Area of the quadrant EAB = 9.625 cm2       eqn3

Area of shaded region = Area of trapezium – Area of quadrant EAB

Area of shaded region = 24.5 – 9.625 (putting values from eqn1 and eqn3)

Area of shaded region = 14.875 cm2

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