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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Uppose, ABCD is the trapezium with AB=60, BC=26,CD=77, DA=25 Through B draw a line parallel to AD to meet DC at E. Clearly ABED is a parallelogram. So BE=25, EC=DC-DE=17, BC=26 So by Heron's formula we can find the area of BEC and its value will be 204 sq.cm So the altitude BF through B of BEC will have length 2*204/17=24 cm So area of ABED is 24*60=1440 So the area of ABCD is 1440+204=1644