Question
if hieght 10 cm and radious =7cm of cone then what is the total surface area.
Answers
saim
surface area of cone=pi(radius)(s) + pi(radius)^2
"s" is the slanting edge of cone
s^2=height^2 + radius^2
s=(100+49)^1/2
s=12.2
so surface area=pi(7)(12.2) +pi(49)
=134.44(pi)
"s" is the slanting edge of cone
s^2=height^2 + radius^2
s=(100+49)^1/2
s=12.2
so surface area=pi(7)(12.2) +pi(49)
=134.44(pi)