Question

plzz Solve question 12 ☺️​

Answer 1

Answer:

here, a=120m,

a=120m,b=80m,

a=120m,b=80m,c=50m

a=120m,b=80m,c=50mand, s= a+b+c

-------------

2

= 250

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2

=125

=125Area she need to plant grass =

√s(s−a)(s−b)(s−c)

s(s−a)(s−b)(s−c)

s(s−a)(s−b)(s−c)

s(s−a)(s−b)(s−c) = √125(125−120)(125−80)(125−50)

125(125−120)(125−80)(125−50)

125(125−120)(125−80)(125−50)

125(125−120)(125−80)(125−50) =375√15 m^2

$\sqrt[375]{15} m2$

cost of fencing =[(a+b+c)−3].20

cost of fencing =[(a+b+c)−3].20=[250−3].20

cost of fencing =[(a+b+c)−3].20=[250−3].20=Rs4940

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