To calculate the amount of wax needed to mold a cylindrical candle, we need to find the volume of the cylinder. The formula for the volume of a cylinder is:
Volume = πr²h
where π is a mathematical constant approximately equal to 3.14159, r is the radius of the cylinder (half the diameter), and h is the height of the cylinder.
Given that the diameter is 12 cm, the radius (r) is half of that, which is 6 cm. The height (h) is 18 cm. Substituting these values into the formula, we can calculate the volume:
Volume = 3.14159 x (6 cm)² x 18 cm
= 3.14159 x 36 cm² x 18 cm
≈ 20385.29 cm³
Therefore, Harold will need approximately 20385.29 cubic centimeters of wax to mold the cylindrical candle.
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Answer:
To calculate the amount of wax needed to mold a cylindrical candle, we need to find the volume of the cylinder. The formula for the volume of a cylinder is:
Volume = πr²h
where π is a mathematical constant approximately equal to 3.14159, r is the radius of the cylinder (half the diameter), and h is the height of the cylinder.
Given that the diameter is 12 cm, the radius (r) is half of that, which is 6 cm. The height (h) is 18 cm. Substituting these values into the formula, we can calculate the volume:
Volume = 3.14159 x (6 cm)² x 18 cm
= 3.14159 x 36 cm² x 18 cm
≈ 20385.29 cm³
Therefore, Harold will need approximately 20385.29 cubic centimeters of wax to mold the cylindrical candle.