A circular ground whose diameter is 34 metres, has a 2 metre-broad garden around it. What is the area of the garden in square metres?
Choose the correct option.
A) 226.3  B) 226.2  C) 228.2  D) 227  E) 226

Rationale: req . area = ï € [ ( 19 ) 2 â € “ ( 17 ) 2 ] = 22 â  „ 7 ã — ( 36 ã — 2 ) [ since a 2 - b 2 = ( a + b ) ( a - b ) ] = ( 22 ã — 36 ã — 2 ) / 7 = 226.3 sq m answer a
Answer: A