Question

Guys please solve this✨
I want full explanation✨✨​

Answer 1

Answer:

correct me if i am wrong

Answer 2

Let the sides be 5x , 3x and 4x .

Perimeter of triangle = Sum of length of three sides

180 = 5x + 3x + 4x

12x = 180

x = 15

First side = 5x = 75 m

Second side = 3x = 45 m

Third side = 4x = 60 m

(i) Area

s = (a + b + c) / 2 = 180 / 2 = 90

$Area=\sqrt{s(s-a)(s-b)(s-c)}\\\\Area =\sqrt{90(15)(45)(30)}\\\\Area = \sqrt{1822500}\\\\Area = 1350m^2$

(ii) Altitude

$\frac{1}{2}*largest-side*a=Area\\\\\frac{1}{2}*75*a=1350\\\\a=\frac{1350*2}{75}\\\\a=36m$

(iii) Cost

$Total- cost=10*Area\\ \\Cost=10*1350\\\\Cost=Rs.13500$