The area of metal sheet required to make a hollow cylinder of radius 7cm and height 24 cm radius is?
Answers
Answer:
Answer:
703.36 square cm metal sheet is required .
The capacity of the cone is 1230.88 cubic cm .
Step-by-step explanation:
We are required to find the area of the metal sheet required to make a closed hollow cone of height 24 cm and base radius 7 cm.
So, we are supposed to find the total surface area of cone .
Formula of total surface area of cone =
Where l is the slant height
r is the radius
So,
Since we are given that the height of the cone is 24 cm and radius of cone is 7 cm.
So,
Now substitute the values in the formula of total surface area .
Total surface area of cone =
=
Thus 703.36 square cm metal sheet is required .
Volume of cone =
=
=
Hence the capacity of the cone is 1230.88 cubic cm .