a solid cylinder has total surface area of 462 cm square its curved surface is one third of its total surface area find the radius and height of the cylinder
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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
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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
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