a bottle of a right cylindrical shaped vessels made from metallic sheet is closed by a cone shaped vessel as shown in figure the radius of the circular base of the cylinder and radius of the circular base of the cone are equal is equal to 7 cm if the height of the cylinder is 20 cm and height of cone is 3 cm calculate the cost of milk to fill completely the special @ rupees 20 per litre
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Answer:
Step-by-step explanation:
Volume of cylinder = π R²h
R = 7cm
h = 20 cm
= (22/7)(7²)(20)
= 154 * 20
= 3080 cm³
Bottom is closed by cone so cone would be inside
Volume of cone = (1/3)π R²h
R = 7 cm
h = 3 cm
=(1/3)(22/7)(7²)(3)
= 154 cm³
Volume of vessel = Volume of cylinder - volume of cone
= 3080 - 154 = 2926 cm³
1 litre = 1000 cm³
2926 cm³ = 2.926 Litr
Cost of Milk = Rs 20 per litre
Cost of milk = 20 * 2.926 = Rs 58.52
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