Answers

2015-07-13T13:35:57+05:30
To find the cost of laying grass , we need to divide area of the triangle in m square with the cost per m sq.
Given triangle is triangle = sq.rt.[s(s-a)(s-b)(s-c)]
where s is semi perimeter and a,b,c are the sides.
area =1500 m sq.
Therefore the cost of laying grass = 1500/7
=214.2222
=214
1 2 1
2015-07-13T21:43:25+05:30
Semi perimeter=(a+b+c)/2
=180/2=90  m.
Area: \sqrt{s(s-a)(s-b)(s-c)}
 \sqrt{90(90-65)(90-65)(90-50)}
 \sqrt{90*25*25*40}
= \sqrt{5 ^{6}*2 ^{4} *3^{2}  }
125*4* 3
1500 m2
Cost:1500*7
=Rs.10500
Ans:Rs.10500.
3 4 3