Question

5. Sides of a triangle are in the ratio of 12:17:25 and its perimeter is 540cm. Find its area.
6. An isosceles triangle has perimeter 30 cm and each of the equal sides is 12 cm. Find
the area of the triangle.
3 Application of Heron's Formula in Finding Areas of Quadrilaterals
has a land to be cultivated and she employs some labourers fo
4. Find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is​

Answer 1

3) Heron's formula can be applied to find the area of a quadrilateral by dividing the quadrilateral into two triangular parts. If we join any of the two diagonals of the quadrilateral, then we get two triangles. Area of each triangle is calculated and the sum of two areas is the area of the quadrilateral.

here is your answers: hope it helps

Answer 2

Answer:

Let the sides of triangle be 12x , 17x, 25x.

Now,

12x + 17x + 25x = 540cm

54x = 540

x = 10cm

12x = 12 * 10= 120

17x = 17*10 170

25x = 25*10 250

Semi perimeter = 270 cm

√ 270(270-120) (270-170) (270-250)

√ 270* 150* 100* 20

9000cm^2