If 3, 10 and 15 are the altitudes of a triangle then area of incircle is

Equilateral triangles I,Ill and IV are such that the altitude of triangle I is the side of triangle II,the altitude of triangle II is the side of triangle and the altitude of the triangle is the side of triangle IV.If the area of triangle I is 2cm^(2), then the area (incm ) of triangle IV is:

If the altitudes of a triangle are 3,10,15, then inradius of the triangle is

What is incircle of a triangle?

If the sides of the triangle are 13,14,15 then the radius of the incircle is

A triangle and a parallelogram have equal areas and bases. If the altitude of the triangle is k times the altitude of the parallelogram, then what is the value of k ?

A square is drawn on the altitude of an equilateral triangle of side 4 cm. a) What is the altitude of the triangle? b) What is the area and perimeter of the square?

If the altitude of a triangle is increased by 10% while its area remains the same, its corresponding base will have to be decreased by

If the altitude of a triangle is increased by 10% while its area remains same, its corresponding base will have to be decreased by

If the altitude of an equilateral triangle is 6 units, then the radius of its incircle is ____________.