Question

find the cost of levelling the ground in the shape of a triangle having sides 26m , 28m and 30m at the rate of rupees 3 per meter square

Answer 1

Answer:

Area will be 336

Cost will be 336* 3=1008/-

Step-by-step explanation:

S= 1/2 *(26+28+30) =42

$a= \sqrt{42(42 - 26)(42 - 28)(42 - 30)}$

Area = 336

Answer 2

Answer:

Rupees 1008

Step-by-step explanation:

Side a= 26m

Side b= 28m

Side c= 30m

Perimeter= a+b+c = 84m

Semi-perimeter=42m

By using Heron's formula

Area=√s(s-a)(s-b)(s-c)

=√46(42-26)(42-28)(42-30)

=√42×16×14×12

=42×3×4×2

=336m²

Cost of 1m = 3

Cost of 336m= 336×3

=1008

Therefore cost of leveling the ground is rupees 1008.