radius = 3, height = 20
Answer:
433.5 square units
Cylinder with radius 3 units and height 20 units
Identify the formula for surface area of a cylinder
Calculate lateral surface area
Calculate area of two circles
Add both areas
Final answer
SA = 2πrh + 2πr²
This formula calculates the surface-area of a cylinder.
A cylindrical can with 3 cm radius and 20 cm height needs 433.5 cm² of material
The surface area of a cylinder is a fundamental concept in geometry. Surface area measures the total area of all surfaces of a 3D object, expressed in square units.
By using the formula SA = 2πrh + 2πr², we can quickly and accurately calculate the surface area for any cylinder when we know the required measurements.
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