Question

find the cost of paint a triangular field whose measures are 28cm 9cm 35cm at the sale of Rs. 7 per cm^2​

Answer 1

Answer:

use formula s =(a+b+c)/2

then use area of triangle=√s(s-a)(s-b)(s-c)

and in last multiple,

area of triangle×rateof painting the triangular filed(means 7)

and let a=28

b=9

c=35

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