# Solution: Find the area of the quadrilateral given the sides and sum of the opposite angles

A quadrilateral have sides 12 m, 20 m, 8 m and 16.97 m. If the sum of the opposite angles is equal to 225°, find the area of the quadrilateral.

#### Problem Statement: CE Board October 1997

A quadrilateral have sides 12 m, 20 m, 8 m and 16.97 m. If the sum of the opposite angles is equal to 225°, find the area of the quadrilateral.

The area of a quadrilateral is 168 sq. m .

Solution:

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