The diameter of a cylindrical tin is 6cm and height is 5 cm. Find the volume of the cylinder?
Correct answer: B. 45 π cc
- A. 30 π cc
- B. 45 π cc
- C. 150 π cc
- D. 180 π cc
Explanation
The diameter is 6 cm, so the radius is 3 cm. The cylinder's volume is πr²h = π × (3 cm)² × 5 cm = 45π cm³. The likely wrong choice is 30π cm³, which uses the diameter as though it were the radius or omits the square on the radius.
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Area measures the surface enclosed by two-dimensional figures, while volume measures the space occupied by three-dimensional solids. Problems use formulas for rectangles, triangles, circles, prisms, cylinders, cones, spheres, and composite figures, including unit conversion and the distinction between surface area, lateral area, and volume.
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