Habs questions
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Habs questions
I was wondering if someone can please help with these questions:
1)Give the precise mathematical name of the three shapes described below:
a) I am a quadrilateral with two pairs of opposite sides of the same length. None of my angles are right angles
b) I am three-dimensional and every point on my surface is at the same distance away from a fixed point
2) When tiling the square wall of my kitchen, I use red and blue square tiles all of the same size. In the pattern all the tiles are red apart from those on the two diagonals which are blue. If I use 37 blue tiles, how many red tiles are needed?
Habs 2003 & 2006
Many thanks for your help
1)Give the precise mathematical name of the three shapes described below:
a) I am a quadrilateral with two pairs of opposite sides of the same length. None of my angles are right angles
b) I am three-dimensional and every point on my surface is at the same distance away from a fixed point
2) When tiling the square wall of my kitchen, I use red and blue square tiles all of the same size. In the pattern all the tiles are red apart from those on the two diagonals which are blue. If I use 37 blue tiles, how many red tiles are needed?
Habs 2003 & 2006
Many thanks for your help
Re: Habs questions
b is a sphere, a is parallelogram..
haven;t worked out the tiles yet!
diagram?
haven;t worked out the tiles yet!
diagram?
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Re: Habs questions
Ok, two diagonals means there are 2 blue on each row apart from the centre row. so total ofJosa wrote: 2) When tiling the square wall of my kitchen, I use red and blue square tiles all of the same size. In the pattern all the tiles are red apart from those on the two diagonals which are blue. If I use 37 blue tiles, how many red tiles are needed?
(37-1)/2 = 18 rows with two blue tiles + the centre row = 19
so the square = 19 * 19 = 361 total tiles
red tiles = 361-37=324
Re: Habs questions
Thank you so much yoyo123 and hermanmunster.
Re: Habs questions
what a team...the Hinge and Brackett of ElevenplusexamsJosa wrote:Thank you so much yoyo123 and hermanmunster.
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- Joined: Fri Sep 15, 2006 9:51 am
- Location: The Seaside
Re: Habs questions
Too right Evadne, a splendid duet!
Love Hilda
Love Hilda