Herons Formula ...

If every side of a triangle is doubled, then the area of the new triangle is 'K' times the area of the old one. The value of K is

The area of a triangle whose sides are $$4\ cm, 13\ cm$$ and $$15\ cm$$, is

A quadrilateral $$ABCD$$ has $$\angle C =90,AB=9 cm,BC=8cm,CD=6cm$$ and $$AD=7 cm.$$ How much area does it occupy?

The area of a triangle whose sides are $$13 cm, 14 cm$$ and $$15 cm$$ is:

The length of sides of a triangle are in the ratio.$$17:12:25$$ and its semi perimeter is $$270 cm$$. Find the area of the triangle.

The lengths of sides of a triangle are in the ratio $$3:4:5$$ and its perimeter is $$144$$ cm, then find the height corresponding to largest side.

One side of an equilateral triangle is 6 cm. Its area by using Heron's formula is

An umbrella is made by stitching $$12$$ triangular pieces of cloth. Each piece measures $$50$$ cm, $$20$$ cm and $$50$$ cm. Find the area of cloth used in it.

In a triangular field having sides 30 m, 72 m and 78 m , the length of the altitude to the side measuring 72 m is

The sides of a triangle are in the ratio of 13:14:15 and its perimeter is 84 cm. Then the area of the triangle is