Write the ratio in the reduced form of radius to the diameter of a circle.

Write 20% as the ratio in the reduce form.

Write the ratio in the reduced form of the ratio of diagonal to the length of a rectangle , having length 4cm and breadth 3cm.

Write the ratio of 78 and 52 in the reduced form.

Find the ratio of radius to circumference of the circle.

What is the ratio of the circumference of a circle to its diameter.

Write the ratio of the second quantity to the first quantity in reduced form: 1.5 kg, 3 kg