The height of a cylinder is equal to the circumference of the bottom surface. If the height is shortened by 2 cm, the surface area will be reduced by 12 square cm. The side area of the cylinder is () square Cm

The height of a cylinder is equal to the circumference of the bottom surface. If the height is shortened by 2 cm, the surface area will be reduced by 12 square cm. The side area of the cylinder is () square Cm

Circumference of the bottom surface of the cylinder = 12 △ 2 = 6 (CM)
Lateral area of cylinder = 6 × 6 = 36 (CM & # 178;)