Find the total surface area of each of the following right circular cylinders
(a) diameter of the base = 7 cm, height = 21 cm
Answers
Answered by
9
Answer:
given,
diameter=7cm
so, r=d/2
r=7/2
and, h=21cm
now,
total surface area of cylinder=2πr(h+r)
=2*22/7*7/2(21+7/2)
=22*49/2
=539 is right answer.
Answered by
6
Answer:
TSA of cylinder = 2πr ( r + h)
Radius = Diameter/ 2
R = 7/2 cm
let π be 3.14
2 x 3.14 x 7/2 ( 7/2 + 21 )
2 x 3.14 x 3.5 ( 3.5 + 21)
21.98 ( 3.5 + 21 )
21.98 x 24.5
538.51 cm^2
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