InterviewSolution
Saved Bookmarks
| 1. |
(3) The diameter of the roller is 84 cm and its length iscm. It takes 500 complete revolutions to moveonce over to level a playground. Find the area ofthe playground in square metres. 14 marks)120Ans. |
|
Answer» Given radius of roller r = 84/2= 42 cmLength of roller h = 120 cm In one revolution roller cover area = 2*pi*r*h= 2*22/7*42*120= 2*22*6*120= 31680 cm^2= 3.1680 m^2 Area of playground= 500*3.1680= 1584 m^2 |
|