The inradius of the triangle having sides 26,28,30 units is

The inradius in a right angled triangle with integer sides is r If r = 4, the greatest perimeter (in units) is

The inradius in a right angled triangle with integer sides is r If r = 5, the greatest area (in sq. units) is

The inradius in a right angled triangle with integer sides is r If r = 4, the greatest perimeter (in units) is

The inradius in a right angled triangle with integer sides is r If r = 5, the greatest area (in sq. units) is

The inradius in a right angled triangle with integer sides is r If r = 4, the greatest perimeter (in units) is

The inradius in a right angled triangle with integer sides is r If r = 5, the greatest area (in sq. units) is

If the lengths of the sides of a triangle are in the ratio 4:5:6 and the inradius of the triangle is 3 cm, then the altitude of the triangle corresponding to the largest side as base is :