Question

Find the surface area of the cylinder to the nearest tenth of a square unit. use 3.14 for pi

Answer 1

Given:

• Height of cylinder is 18.2 cm
• Radius of cylinder is 3 cm

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To Find?

• Surface area

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Solution:

Using formula:

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

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Substituting values in the formula:

$\longrightarrow \sf 2 × 3.14 × 3 (18.2 + 3)$

$\longrightarrow \sf 6.28 × 3 (21.2)$

$\longrightarrow \sf 18.84 × 21.2$

$\longrightarrow \sf 399.4 cm²$

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• Hence, (B) 399.4 cm² is right answer.