Herons Formula ...

The area of an equilateral triangle with side $$2 \sqrt{3}$$ cm is

The cost of levelling the ground in the form of a triangle having the sides 51 m, 37 m and 20 m at the rate of Rs $$3$$ per $$m^2$$ is 

In a triangle, the sides are given as 11 cm, 12 cm and 13 cm. The length of the altitude corresponding to the side having length 12 cm is 

The area of an isosceles triangle having base 2 cm and the length of one of the equal sides 4 cm, is

Find the cost of laying grass in a triangular field of sides $$50\>m, 65\>m$$ and $$65\> m$$ at the rate of Rs $$7$$ per $$m^2$$.

The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle is

The area of an isosceles triangle whose base is $$'b'$$ and equal sides are of length $$'a'$$ is:

The sides of a triangular plot are in the ratio $$4 : 5 : 6$$ and its perimeter is $$150\ \mathrm{cm}$$. Then the sides are:

Two sides of a triangle are $$13 cm$$ and $$14 cm$$ and its semi perimeter is $$18 cm$$. Then third side of the triangle is :