Geometry

Two circles C₁ and C₂ are shown in the figure below:

The radius of the two circles is r₁ and r₂. If the area marked with green colour equals to 242 square units, then which of the following is correct?

A rectangular field of length 30 m and breadth 20 m contains a circular flower bed of radius 7 m. Find the area of the field, excluding the area of the flower bed.

If two sides of a triangle are 4 cm and 8 cm, then which of the following conditions best describes the length of the third side?

Find the value of y from the given figure.

If one side of a rectangle equals cm and the other side is twice the previous one. Then the perimeter of rectangle is