Question

Find the total surface area of a closed cylinder whose radius is 21 cm and height is 5 cm ​

Answer 1

Answer:

3432 cm²

Step-by-step explanation:

Total surface area of cylinder = 2 × 22/7 × r × (r+h)

Given, radius (r) = 21 cm and height (h) = 5 cm.

=> TSA = 2 × 22/7 × 21 × (21+5)

=> TSA = 44 × 3 × 26 cm²

=> TSA = 3432 cm²

Answer 2

Answer:

3432

Step-by-step explanation:

total surface of cylinder=2πr (r+h)

=2×22/7×r×(r+b)

=R=21

=H=5

=2×22/7×21×(21+5)

=44×3×26cm²

=3432