A field is in the shape of trapezium having parallel sides 90 M and 30 M . these sides meet the third side at the right angles .the length of the fourth side is hundred metre. if it costs rupees 4 to plough 1 meter squares of the field .find the total cost of ploughing
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I don't think there is any need of herons formula.....if it's mentioned in the question the
do this way
area of the trapezium = area of the ∆AED+ area of rectangle ABCE
then use herons formula to find the area of the triangle....then the same way...
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