Area of gold region = Area of 1st  circle =πr12​=π(10.5)2=346.5 cm2 Area of red region = Area of 2nd  circle - Area of 1st  circle =πr22​−πr12​ =π(21)2−π(10.5)2 =441Π−110.25Π=330.75Π =1039.5 cm2 Area of blue region = Area of 3rd  circle - Area of 2nd  circle =πr32​−π12​ =π(31.5)2−π(21)2 =992.25π−441π=551.25π =1732.5 cm2 Area of black region $=$ Area of 4th  circle - Area of 3rd  circle =πr42​−πr32​ =π(42)2−π(31.5)2 =1764π−992.25π Area of white region = Area of 5th  circle - Area of 4 circle =πr52​−πr42​ =π(52.5)2−π(42)2 =2756.25π−1764π =992.25π=3118.5 cm2