A lawn roller is 150 cm long and has a diameter of 70 cm.

A lawn roller is 150 cm long and has a diameter of 70 cm. to level a playground, it takes 750 complete revolutions. Determine the cost of levelling the playground at the rate of $2.00 per square metre.
in Word Problem Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

The area rolled in one revolution of the roller is equal to the circumference of the roller multiplied by its length=70(pi)*150=10500(pi)sq cm=1.05 sq m. In other words, the surface area of a cylinder of diameter 70 and length 150. 750 revs=750*1.05 sq m=787.5 sq m. The cost of levelling is 787.5*2=$1575.

by Top Rated User (1.2m points)

Related questions

1 answer
How long does it take cubscouts to mulch a lawn?
asked Mar 15, 2012 in Word Problem Answers by anonymous | 595 views
1 answer
find the area rolled by roller
asked Aug 9, 2013 in Word Problem Answers by shubh | 441 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
732,334 users