Question

the radius of a right circular cylinder is 5 cm and its height is 9 cm.Find the curved surface area and total surface area of the cylinder​

Answer 1

Answer:

The CSA of the cylinder = 282.6 cm²

The TSA of the cylinder = 439.6 cm²

Step-by-step explanation:

Given that,

The Radius of the Cylinder = 5 cm

The Height of the Cylinder = 9 cm

The formula for Curved Surface Area of a Cylinder [CSA]=2πrh

Thus, CSA = 2×π×5×9

                 = 2×3.14×5×9 [∵ π=3.14]

     ∴ CSA = 282.6 cm²

The Formula for Total Surface Area of a Cylinder [TSA]=2πr(r+h)

Thus, TSA = 2×3.14×5(5+9) [∵π=3.14]

                 = 2×3.14×5×14

     ∴ TSA = 439.6 cm²