If the area of the circle is 154 sq. cm., then its perimeter is
If the sum of areas of two circles with radii R and R2 is equal to the area of radius R, then
If the sum of the circumferences of two circles with radii r1 and r2 is equal to the circumference of a circle of radius r, then
If the circumference of a circle and the perimeter of a square are equal, then
If the perimeter of a circle equal to that of a square, then the ratio of their areas is
It is proposed to build a single circular park equal in area to the sum of the areas of two circular parks of diameters 16m and 12m in a locality. The radius of the new park would be
The area of a circle that can be inscribed in a square of side 6 cm is
The area of the square that can be inscribed in a circle of radius 8 cm is
The radius of a circle whose circumference is equal to the sum of circumferences of the two circles of diameters 36 cm and 20 cm is
The diameter of a circle whose area is equal to the sum of areas of the two circles of radii 24 cm and 7 cm is