Tiling a doghouse floor

 

A doghouse has a floor 2 feet wide and 3 feet long. Ram wants to cover this floor with tiles that are 1 foot long and 1 foot wide. How many tiles would he need to complete this task?

Ramani

Comments

Post a Comment

Popular posts from this blog

Flying all the way round the Equator!

Image
You know that drones are usually planes that fly without any pilots! They are controlled by a computer they carry.  Image Credit: NASA I think that very soon some drone will fly non-stop all around the equator, starting at some point on it and coming back to that point.  Suppose the drone flies at 100 miles per hour. How long will it take to fly a complete trip, flying over the equator?  You will have to know the distance involved. That depends on the size of the earth. Can you find out what is the distance the drone will have to fly? Then you can calculate how many hours it will take for the drone to fly this trip! Finally, you can convert the hours to days.  Talk to people who can help you with this calculation. Or perhaps, you can look up a book to find the distance involved. Ask the librarian in your school to show you an atlas. It will probably give you the answer. The librarian may help you find it.  Srinivasan Ramani 
Read more

Biden and Trump

Find a formula   Suppose Biden and Trump stand for election to a golf club which has a hundred members. The one among them who gets more votes would be accepted as a new member. Sometime during the counting, the secretary of the club comes out and says that one person has got 49 votes and the other has got 36 votes as of that moment. The remaining votes are being counted. Someone says, since one has already got 49 votes, why don’t we stop the count and declare him the winner?   The Secretary says, "No. we have to be mathematically sure that one candidate has such a lead that he canot be defeated if the election continues".      Let H be the votes earned by the leading candidate by that time. Let L be the votes earned by the other  candidate by that time. The total number of votes distributed, one per member = 100 Please note all members may not vote. Write the stopping condition in terms of H, L or both.   If the condition is satisfied, ...
Read more

Don’t Believe Everything you read or see!

Image
I see a big difference between well-educated people and others. Nowadays, much valuable information and knowledge comes through the Internet. However, anyone can write anything and send it to thousands of people at no cost. So much rubbish also comes along. Many of the stories that come to us over channels like WhatsApp, X, and email are untrue.  Read the following paragraphs and find the ones that do not appear true.  1) At just 10 years old, Tilly recognized the signs of an impending tsunami from a geography lesson she had two weeks earlier. She alerted her parents and other  beachgoers, leading to a beach evacuation just before the tsunami hit [1]. This saved a hundred lives. Newspapers carried the story and made her famous for her quick thinking.  [1]: en.wikipedia.org  2) A school in Boston, MA, held a unique competition for high ju mpers on Sunday, 9/29. Cars were parked side by side on a playground. Competitors had to choose how many cars they would jump ...
Read more