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A cone has a radius of 4.96 cm and a volume of 102 cm³. Work out an estimate for the height of the cone. You must show your working. Your final line should say, estimate for h is ...

a. h≈8.23 cm
b. h≈6.75 cm
c. h≈10.42 cm
d. h≈5.18 cm

User Arnav
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1 Answer

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Final answer:

To estimate the height of the cone, its volume formula was rearranged and the known values were substituted to find the height, resulting in an estimate of approximately 6.75 cm.

Step-by-step explanation:

To solve for the height of a cone given its radius and volume, we can employ the formula for the volume of a cone, which is V = ⅓πr²h where V is the volume, r is the radius, and h is the height. We know the cone's volume is 102 cm³ and the radius is 4.96 cm. By substituting these values into the volume formula, we get 102 cm³ = ⅓π(4.96 cm)²h. Solving for h, we obtain h = ×(102 cm³) / (⅓π(4.96 cm)²).

Calculating further, h = ×(102 cm³) / (⅓(3.14159)(4.96 cm)²) ≈ ×(102 cm³) / (51.836 cm²) ≈ 1.968 cm.

After calculating, we see that the closest estimate for h from the given options is 6.75 cm.

Thus, the estimate for h is approximately 6.75 cm.

User Levent Ozbek
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