In one hour Dele walks 8km. how long will it take her to walk 14km at the same rate
1 answer:
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Answer: Option C.
Step-by-step explanation:
Use the formula for calculate the volume of a cone:
Where r is the radius and h is the height.
Volume of the cone A:
Volume of the cone B:
If the height of the cone B and the height of the cone A are the same , but the radius of the cone B is doubled, then its radius is:
Then:
Divide by
:
Therefore: When the radius is doubled, the resulting volume is 4 times that of the original cone.