If the radius and height of a right circular cylinder are 21 cm and 5 cm, respectively, then what is the total surface area of the cylinder? (Use π = 22/7)

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Accepted Answer

The total surface area (TSA) of a right circular cylinder is given by the formula:

TSA = 2πr(h + r)

Given:
r = 21 cm
h = 5 cm
π = 22/7

Step 1: Calculate (h + r):
5 + 21 = 26

Step 2: Calculate TSA:
TSA = 2 × (22/7) × 21 × 26

Step 3: Simplify:
= 2 × 22 × 3 × 26  (since 21/7 = 3)
= 2 × 22 × 78
= 44 × 78
= 3432 cm²

Therefore, the total surface area of the cylinder is 3432 cm².

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