Find the area of circle with radius 6.3 cm in cm²

The circumference of circle exceeds diameter by 8.4 cm. Find the area of circle in cm².

A horse is tied to a pole with 28m long string. find the area upto which horse can graze in m²

The Numerical value of area of circle is greater than the numerical value of its circumference.

The distance travelled by a circular wheel of diameter d in one revolution is 2d.

The area of a circular playground is 22176 m². Find the cost of fencing this ground at the rate  of Rs. 50 per m².

An archery target has 3 regions formed by 3 concentric circles. If the diameters of concentic circles are in the ratio 1:2:3, then_______ is ratio of areas of 3 regions.

If the sum of the areas of 2 circles with R1 and R2  is equal to the area of a circle of Radius R then R₁²+R₂²=R²

It is proposed that to build a single circular part equal in area to the sum of areas of 2 circular parks of diameter 16 m and 12 m in a locality. The radius of new park would be in m.

If the perimeter of circle is equal to that of a square. Then the ratio of their areas is equal to_______