# maths

Leila has a number of identical equilateral triangle shaped tiles. How many must she put together in a row (edge to edge) to create a shape which has a perimeter ten times that of a single tile?

Thanks to anyone who helps

1. 👍 0
2. 👎 0
3. 👁 116
1. draw it
the ends need 2 s
the top need n
the requirement is 10 * 3s = 30 s
so
2 s + n s = 30 s
n = 30 -2

1. 👍 0
2. 👎 0
posted by Damon
2. I mean top and bottom need n

1. 👍 0
2. 👎 0
posted by Damon

## Similar Questions

1. ### physics

the side of an equilateral triangle is 20 cm identical charges of 1.5x 10^-5 C are placed at each of the 3 vertices. If a test charge is placed at the middle of equilateral triangle what force would be acting on the test charge?

asked by jesmaincruz on November 13, 2012
2. ### math

tiles are fitted on the ground of a rectangle hall having length 5m and breadth4m find the number of tiles if they are square shaped having each side 25cm

asked by vaidehi on March 29, 2013
3. ### Math

A pentagon is formed by putting together three identical equilateral triangles and one larger equilateral triangle with length of edge equal to 2 times that of the smaller equilateral triangle. If the perimeter of the smaller

asked by Cindy on April 13, 2007
4. ### Math

Which triangle is not possible to construct? A a right isosceles triangle B an acute equilateral triangle C an obtuse scalene triangle D a right equilateral triangle This is the second time ive posted but the last thread got

asked by help appreciated on May 1, 2016
5. ### Math

An equilateral triangle s divided into 4 congruent equilateral triangles. What method can be used to find the area of the larger equilaterl triangle give the area of one of the smaller triangles? F. Multiply the area of the larger

asked by Danny on December 7, 2010
6. ### physics

3 identical charges each having charge 10 coulomb are placed at the corners of an equilateral triangle of side 20cm find the electric field at the centre of triangle

asked by aditi on April 16, 2013
7. ### 5th grade math

Mr.Jones wants to put tiles on the floor by the front door of his house. He wants to use 3 different colors of tiles in his design. one half of the tiles to be blue, one fourth of the tiles to be gray, and one fourth of the tiles

asked by mia on October 7, 2010
8. ### Physics

three identical 2*`0^-5C point charges are placed a the corners of an equilateral triangle pf sodes 1m. The triangle has one apex C pointing up the page and 2 base angles A and B. Deduce the magnitude and direction of the force

asked by Anonymous on February 25, 2009
9. ### MATH

Which triangle is not possible to construct? A a right isosceles triangle B an acute equilateral triangle C an obtuse scalene triangle D a right equilateral triangle Would it be A

asked by help appreciated on May 1, 2016
10. ### maths

perimeter of a equilateral triangle is given as 42 cm. Find the perimeter of a shaded part of triangle if the 3 sectors of a circle marked are identical

asked by hesham on March 12, 2011

More Similar Questions