When the radius of the bottom of a cylinder increases by 3 cm, the side area increases by 62.8 cm. If the perimeter of the bottom increases by 2 cm, how much does the side area increase

When the radius of the bottom of a cylinder increases by 3 cm, the side area increases by 62.8 cm. If the perimeter of the bottom increases by 2 cm, how much does the side area increase

62.8÷﹙3.14×3×2﹚×2=20/3