Fill in the blanks
Formed by completely `(360^@)` revolving a right angled triangle once by taking the hypotenuse as axis is______.

The length of two sides adjacent to right angle of a right angled triangle are 3 cm and 4 cm. Find the volume of the solid formed by complete revolving the triangle once by taking the hypotenuse as axis.

The length of two sides adjacent to right angle of a right angled triangle are 15 cm and 20 cm. Calculate the volume of the solid formed by completely revolving the triangle once by taking the hypotnuse as axis.

Show that in a right angled triangle, the hypotenuse is the longest side.

The length of two sides adjacent to right angles of a right angled triangle are 4 cm and 3 cm. Find the curved surface area and volume of the solid formed by completely revolving the traingle once by taking the longer side adjacent to right angle as axis.

If the radius of the circumcenter of a right angle triangle is 8cm , then calculate the hypotenuse of the triangle.

If the radius of the circumcenter of a right angle triangle is 12cm , then calculate the hypotenuse of the triangle.

If the radius of the circumcenter of a right angle triangle is 10cm , then calculate the hypotenuse of the triangle.

Prove that the area of a right-angled triangle of a given hypotenuse is maximum when the triangle is isosceles.

Equilateral triangles are drawn on the three sides of a right angled triangle. Show that the area of the triangle on the hypotenuse is equal to the sum of the areas of triangles on the other two sides.

Fill in the blanks Circumradius of a right angled triangle is half of its___.