write the formula to
find the total surface area of cone
Answers
Answer:
π r (r + l )
Step-by-step explanation:
Given---->
-----------
A cone
To find----->
------------
Total surface area of cone
solution ----->
-------------
let radius ,height and slant height of
cone be r, h, l respectively
Now
radius of cone =r
height of cone =h
slant height of cone=l
curved surface area of cone=πrl
base of cone is circular so
area of base of cone=πr²
now
total surface area of cone=curved
surface area + area of base
=πrl + πr²
taking πr as common
=πr(r+l)
additional information --->
-------------------------------------
(1). l²=r² + h²
1
(2). volume of cone =----- πr²h
3
(3).volume of cylinder =πr²h
(4).curved surface area=2πrh
(5).Total surface area=2πr(r+h)
(6).Area of both ends of cylinder =2πr²
4
(7).volume of sphere =----- πr³
3
(8)surface area of sphere =4πr²
2
(9)volume of hemisphere =---- πr³
3
(10).curved surface area of hemisphere
=2πr²
(11)Total surface area of hemisphere
=3πr²
(12)volume of cube=(side)³
(13)lateral surface Area of cube
=4(side)²
(14) total surface area of cube=6(side)²
(15).volume of cuboid =l × b × h
(16)lateral surface area of cuboid
=2(l b + b h + l h)
Answer:
Step-by-step explanation:
The surface area of a cone is computed with the following formula:
A = π⋅r⋅sqrt(r^2+h^2)