Question

find the T.S.A of cylinder if r÷21cm h=5cm​

Answer 1

Answer:

Step-by-step explanation:

as we know value of r=21cm

value of h =5cm

so this is your answer

Answer 2

Answer :

• Total surface area of cylinder is 3432 cm²

Given :

• Height of cylinder = 5cm
• Radius of cylinder = 21cm

To find :

• Total surface area of cylinder

Solution :

As we know that,

• Total surface area of cylinder = 2πr (r + h)

Where, r is radius (21cm ) and h is height (5cm)

》Total surface area of cylinder = 2πr (r + h)

》2 × 22/7 × 21 (21 + 5)

》2 × 22 × 3 (21 + 5)

》44 × 3 (21 + 5)

》132(26)

》3432 cm²

Hence , Total surface area of cylinder is 3432 cm²

More Explanation :

• Curved surface area of cylinder = 2πrh
• Total surface area of cylinder = 2πr(r + h)
• Volume of cylinder = πr²h