The diameter of the circumcircle of a triangle with sides 5 cm, 6 cm and 7 cm, is

Find the radius of the circle which is circumcircle of the triangle with side 6cm,8cm and 10cm .

The area of the circumcircle of a right angle triangle whose sides are 6 cm, 8 cm and 10 cm will be:

Find the radius of the circle which is circumcircle of the triangle with side 3cm,4cm and 5cm .

Find the radius of the circle which is circumcircle of the triangle with side 13cm,10cm and 17cm .

Find the radius of the circle which is circumcircle of the triangle with side 9cm,12cm and 15cm .

The radius of the circumcircle of a right angled triangle is 15 cm and the radius of its inscribed circle is 6 cm. Find the sides of the triangle.

In each of the following give the justification of the construction also : Construct a triangle with sides 5cm, 6cm and 7cm and then another triangle whose sides are (7)/(5) of the corresponding sides of the first triangle.