Question

what is the cost of leveling a triangular portion of land with sides 72m, 30m, and 78m Respectively at the rate of 20 paisa per square meter??​

Answer 1

Step-by-step explanation:

Q.

The cost of leveling a triangular piece of land whose sides are 72 m 30 m and 78 in respectively at the rate of 20 paisa per square metre is: ?

₹ 261

₹ 212

₹ 216

₹ 211

Hide Explanation

A triangular piece of land whose sides are 72 m 30 m and 78,

Let a= 72m , b=30m , c=78m

Now, S= (a+b+c)/2 =72+30+78 = 180/2 = 90 m

Using herons formula,

Area= Ös(s-a)(s-b)(s-c)

Area = Ö90(90-72)(90-30)(90-78)

= Ö1166400 = 1080 m2

It is done at a rate of 20 paisa per metre, cost of leveling the triangle,

= 20*1080 = 21600 paisa

1 rupee = 100 paisa

21600 paisa = 21600/100 = 216 Rs

Answer 2

Answer:

mene pubj 1 baar vi noi khela xD