The total surface area of a solid cylinder is 231 cm square if curved surface area is 2/3 of the total surface area, determine the radius of its base and its height.
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it gives radius 7/2
and find height
then height is 7 is the answer
c.s.a = 2/3 × t.s.a
by solving
pi × r × h=77 i.e eq1
and also given
t.s.a= 213 by using this
find h it gives
h= {231/(2 × pi × r) } - r
i.e eq 2 by solving both eq we get r = 7/2 and also h= 7
and find height
then height is 7 is the answer
c.s.a = 2/3 × t.s.a
by solving
pi × r × h=77 i.e eq1
and also given
t.s.a= 213 by using this
find h it gives
h= {231/(2 × pi × r) } - r
i.e eq 2 by solving both eq we get r = 7/2 and also h= 7
annu80:
please explain how this answer come
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