Cuplemen
tary. Find the height of the tower.
39. The bottom of a light cylinderical shaped
vessel made from metallic sheet is closed
by a cone shaped vessel as shown in the
figure. The radius of the
circular base of the cylin-
der and radius of the cir-
cular base of the cone
each is equal to 7cm. If the
height of the cylinder is
20cm & height of the cone
is 3cm, calculate the cost of milk to fill com-
pletely this vess at the note of Rs. 20 liter
OR
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GIVEN:
- Radius of the circular base of the cylinder = 7 cm
- radius of the circular base of the cone = 7 cm
- Height of the cylinder = 20 cm
- Height of the cone = 3 cm
TO FIND:
- What is the cost of milk to fill completely this vessel the rate of Rs. 20 litre ?
SOLUTION:
Radius of Cylindrical part is 7cm and height of Cylindrical part is 20 cm
To find the Volume of cylinder, we use the formula:-
Take π = 22/7
Putting the values in the formula, we get
❛ Volume of cylinder is 3080 cm³ ❜
Radius of Conical part is 7cm and height of Conical part is 3 cm
To find the Volume of Cone, we use the formula:-
Take π = 22/7
Putting the values in the formula, we get
❛ The volume of cone is 154 cm³ ❜
✬ Total Volume of Vessel = Volume of Cylinder – Volume of cone ✬
❛ The total Volume of Vessel is 2926 cm³ ❜
If rate of each litre is Rs. 20:
Then,
➨
➨
❛ Hence, the cost of milk to fill completely this vessel is Rs. 58520 ❜
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