DIRECTIONS: Passage ? 1 Read the passage(s) given below and answer the questions that follow Area between two concentric circles. Two circles are said to be concentric if they have a common center. Sometimes, we have to find the area between two concentric circles. For example, the area of a ring, the area of a circular field having a circular pond in the middle. So, let us consider two concentric circles with r as the radius of the inner circle and R as the radius of the outer circle. Area between the circles \[=\] Area of outer circle\[-\]Area of the inner circle \[=\pi {{R}^{2}}-\pi {{r}^{2}}=\pi ({{R}^{2}}-{{r}^{2}})\] A 7m wide path is to be constructed all around, and outside a circular garden of diameter 112m. The cost of constructing the path at Rs. 50 per square meter is

• A. Rs. 13090                   
• B. Rs. 130900
• C. Rs. 1309        
• D. Rs. 13000