Question

surface area of a cylinder is 1320 CM square and its base has a radius of 10.5 cm find its find the height of the cylinder

Answer 1

HELLO DEAR,


LET THE HAIGHT OF THE CYLINDER=h CM

And THE RADIUS OF THE CYLINDER=10.5CM

AREA OF CYLINDER=πR(R+H)

NOW,PUT THE VALUES

WE GET,


$1320 = \pi r(r + h) \\ = > 1320 = \frac{22}{7} \times 10.5(r + h) \\ = > (r + h) = \frac{1320 \times 7}{22 \times 10.5} \\ = > (r + h) = \frac{60 \times 7}{10.5} \\ = > 10.5 + h = 40 \\ = > h = 40 - 10.5 \\ = > h = 29.5$
I HOPE ITS HELP YOU DEAR
, THANKS