a building is in the form of a cylinder of radius 7 m and height 6 m surmounted by a cone of same radius and of slant height 14 m calculate the other surface area of the building
Answers
Answer:
The other surface area of the building = 572 m².
Explanation:
The radius of the cylinder is = 7 m
The height of the cylinder is = 6 m
The radius of the cone is = 7 m
The slant height is = 14 m
The other surface area or the internal surface area is to be calculated.
For this calculation the following steps are done-
The internal Curved Surface area of cone = πrl [ here π= 22/7, r= radius, l= slant height]
The internal Curved Surface area of Cylinder = 2πrh [ here π= 22/7, r= radius, h= height of the cylinder]
Now, πrl= 22/7 × 7× 14
= 308 m²
2πrh= 22/7 × 7× 6× 2= 264 m²
The Total internal curved surface area = 264+308 =572 m².
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