Herons Formula ...

Find the area of the parallelogram with sides $$10 cm$$ and $$12 cm$$ and one of the diagonals as $$14 cm.  $$

The perimeter of a triangular field is 144 m and the ratio of the sides is 3 : 4 : 5 The area of the field is

Find the area of a triangle with sides having length $$40, 24$$ and $$32 m$$

Find the area of a triangle with two equal sides of $$5 cm$$ and remaining one of $$8 cm$$.

Find the area of the triangluar field whose sides are $$39\ m, 25\ m$$ and $$56\ m$$ respectively.

The sides of a right triangle are 5cm, 12 cm and 13 cm . Then its area is

The sides of a triangular plot are in the ratio of $$3:5:7$$ and its perimeter is $$300m$$. Find its area.

$$s$$ in Heron's formula is ___ .

Area of the quadrilateral ABCD is 

Find the area of a triangle, two of its sides are $$8 cm$$ and $$11 cm$$ and the perimeter is $$32 cm$$.