What is the total surface area of a cylinder having a radius of 3.5 cm and height 5.5 cm?
Answer: 198 cm²
Explanation
we use the formula:
Total Surface Area=2πr(h+r)
Where:
- r is the radius of the cylinder.
- Radius r=3.5cm
- Height h=5.5cm
- Plug values into the formula:
Total Surface Area=2π×3.5×(5.5+3.5) =2π×3.5×9
=2×3.1416×3.5×9
=2×3.1416×31.5
=6.2832×31.5
≈198.0cm2
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