Question

Find the height of a cylinder with radius 25 cm and surface area 8953.54 cm2.

32.00 cm

16.00 cm

31.00 cm

62.00 cm

Answer 1

Recall , the surface area for a cylinder is 2 circles for the top and bottom, and the side wall added up..

The circles area - pi*r^2
The side area is circumference times height - 2*pi*r * h

Answer 2

\[SA=2\pi*r^2+2\pi*r*h\]

Answer 3

right?

Answer 4

@Kainui

Answer 5

THey gave you surface area and the radius.
SA =8953.54
r = 25

You can find the height from those...
\[\large SA=2\pi*r^2+2\pi*r*h\]
\[\large 8953.54 = 2\pi*(25)^2+2\pi*25*h\]