Area Related to Circles

The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is

Three concentric circles have radii x cm, 10 cm and 5 cm such that x > 10 > 5. If the area enclosed by circles with radii x cm and 10 cm is the same as the area enclosed by the circles with radii 10 cm and 5 cm, find the area of the largest circle.

The radii of two circles are 8 cm and 6 cm respectively. Find the radius of the circle having area equal to the sum of the areas of the two circles.

The radii of two circles are 8 cm and 6 cm respectively. Find the radius of the circle having its area equal to the sum of the areas of the two circles.

The circumference of Circle A is twice the circumference of circle B. {:("Quantity A","Quantity B"),("The area of Circle A","Twice the area of Circle B"):}

If the sum of the areas of two circles with radii R_(1) and R_(2) is equal to the area of a circle of radius R, then

What is the area of the circle whose radius is the average of the radii of two circles with areas of 16pi and 100pi ?

If the area of a circle is equal to the sum of the areas of two circles of diameters 10 cm and 24 cm, then diameter of the larger circle (in cm) is (a) 34 (b) 26 (c) 17 (d) 14

Find the Area of Circle and circumference of circle

The area of circle is 100 times the area of another circle. What is the ratio of their circumferences?