The area of the base of a cone is 616 cm2. If its slant height is 20 cm, then what is the total surface area of the cone? [Use $π =\frac{22}{7}$]
Answer & explanation
Correct answer: option 3
We know that,
Volume of a hemisphere = \(\frac{2}{3}\) πR3
Volume of a cylinder = πr2h
We know,
Internal radius of hemispherical bowl = 18 cm = R
Internal radius of bottle = 3 cm = r
Internal height of bottle = 4 cm = h
Total volume of liquid in hemisphere = \(\frac{2}{3}\) × π ×183 = 3888π cm3
Let the number of bottles = x
3888π = x × π × (3)2 × 4
x = 108