Question

solid cylinder has total surface area 462 centimetres square discovery serials one third of its total surface area find the radius and height of the cylinder???.....and first one to answer would be followed and marked as brainliest....plz help me out!!!!​

Answer 1

Answer:

tsa=462m^2

csa=1/3 of tsa

or, 2(pi)rh=1/3*2(pi)r(r+h)...

we get....

2h=r......keep it in mind

...then,

tsa=462

i.e 2(pi)r^2+2(pi)rh=462

2(pi)r^2+(pi)r^2=462 (since, 2h=r)

2

3(pi)r^2=462

r^2=462/3(pi)

calculate by putting (pi(=22/7

youllbget

r^2=49

r=7cm

putting in relation 2h=r

h=7/2=3.5cm

mark as brainliest

Answer 2

Answer:

r=7 and h=3.5 is the answer of this question