2012 · Q79
What is the height of a solid cylinder of radius 5 cm and total surface area 660 cm^2?
Elementary MathematicsMensuration
- A10 cm
- B12 cm
- C15 cm
- D16 cm
Explanation
2*pi*5*(h+5) = 660 gives h+5 = 21, so h = 16 cm.
What is the height of a solid cylinder of radius 5 cm and total surface area 660 cm^2?
Explanation
2*pi*5*(h+5) = 660 gives h+5 = 21, so h = 16 cm.