The sides of a triangle are 42 cm, 34 cm and 20 cm. Calculate its area and the length of the height on the longest side. 

Sides of a triangle are 45 cm, 39 cm and 42 cm, find its area.

The sides of a triangle are 17 cm, 21 cm and 10 cm respectively. Find the altitude of the triangle on the longest side of the triangle

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

The sides of a triangle are 35 cm, 54 cm and 61 cm respectively. Find the length of its longest altitude.

If the sides of a triangle are 5 cm, 7 cm and 8 cm, then its area is . . . . . . .

Find the area of a triangle whose sides are 20 cm, 34 cm and 42 cm. Hence find the height corresponding to the longest side.

Find the area of a triangle whose sides are 20 cm, 34 cm and 42 cm. Hence find the height corresponding to the longest side.