two parallel side of a trapezium are 60 amd 77 cm and other sides are 25 and 26 cm.find the area of the trapezium.

Draw a line DE parallel to AB and draw a perpendicular DF on CB.

It can be observed that ABED is a parallelogram.

BE = AD = 60 cm

ED = AB = 25 cm

EC = 77 − BE= 17 cm

For ΔDEC,

Semi-perimeter,  

By Heron’s formula,

Area of triangle

Area of ΔDEC =

=cm2= 204 cm2

Area of ΔDEC =

 Area of the trapezium ==

 

 

  • 124

its simple.1st u make a triangle at on sideof trapezium.then u find the area of that triangle.after finding the area u could easily find the height of triangle & that's only the height of trapezium..after that u apply the formula of area i.e. 1/2 * sum of || sides * height..

  • -11

thnx

  • -11
What are you looking for?