Question

Ques-6 Find the cost of leveling a ground in the form of a triangle with sides 16m,12m and 20m at Rs.4 per sq.meter

Answer 1

Answer:

Rs 384

Explanation:

Area of a triangle =

$\sqrt{s(s - a)(s - b)(s - c)}$

where sis the semi-perimeter of the triangle

Perimeter of the given triangle = (16+12+20) m

= 48 m

So, semi-perimeter = (48/2) m = 24 m

So, area of the triangle =

[tex] \sqrt{s(s - a)(s - b)(s - c)} [/tex]

= [tex] \sqrt{24(24-16)(24-12)(24-20)} [/tex]

= [tex] \sqrt{24×8×12×4} [/tex]

= [tex] \sqrt{9216} [/tex]

= 96 cm^2

Cost of leveling the field = Rs (96×4)

= Rs 384

Hope it helps.......

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