Question

In a rectangular field of dimensions 20m x 15m , a triangular park is constructed. If the

dimensions of the park are 5m, 7m and 8m respectively , find the cost of levelling the

remaining field at the rate of Rs 100 per m2

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Answer 1

Answer:

Step-by-step explanation:Given,

dimensions of rectangular field =20*15

                                   area of field = 300

        dimensions of triangular park = 5,7,8 m

     s=a+b+c/2

       =5+7+8/2

        =20/2

         =10

 area =√s(s-a)(s-b)(s-c)

           =√10(10-5)(10-7)(10-8 )

           =√10*5*3*2

           =√300

            =17.3

remaining field = 300-17.3

                           =282.7

the rate of Rs 100 per m  2

  ATQ

282.7*100

= Rs 28270 (ans)