The volume of a cone is 27720 cm3. If the height of the cone is 20 cm, then what will be the area of the base?
Answer & explanation
Correct answer: option 1
We know that,
Volume of a cone = \(\frac{1}{3}\)πr2h
Base area of a cone = πr2
We have,
The volume of a cone = 27720 cm3
The height of the cone = 20 cm
According to the question,
\(\frac{1}{3}\) πr2h = 27720
= \(\frac{1}{3}\)πr2 × 20 = 27720
= πr2 = 4158