If the altitudes of a triangle be 2,4,6, then find its in-radius.

The base of a triangle is 4cm longer than its altitude. If the area of the triangle is 48 sq.cm then find its base and altitude.

The areas of two similar triangles are 100 cm^(2)" and "49 cm^(2) respectively. If the altitude of the bigger triangle 5 cm, find the corresponding altitude of the smaller triangle.

If the coordinates of the midpoints of the sides of a triangle are (3,4), (4,6) and (5,7) , find its vertices.

The areas of two similar triangles are 81 cm^(2) and 49 cm^(2) respectively. If the altitude of the bigger triangle is 4.5 cm. Find the corresponding altitude of the smaller triangle.

The ratio of the measures of three sides of a triangle is 4 : 2 : 3 and its perimeter is 36 cm. Find the area of this triangle.

The altitude of a right triangle is 7 cm less than its base. If the hypotenuse is 13 cm , find the other two sides.

The altitude of a right triangle is 7 cm less than its base. If the hypotenuse is 13 cm, find the other two sides.

If centroid of a triangle be (1, 4) and the coordinates of its any two vertices are (4, -8) and (-9, 7), find the area of the triangle.

If A=(1, 2, 3), B=(4, 5, 6), C=(7, 8, 9) and D, E, F are the mid points of the triangle ABC, then find the centroid of the triangle DEF.

Curved surface area of a right circular cylinder is 4.4 m^(2) . If the radius of the base of the cylinder is 0.7 m, find its height.