Math Problem Statement

answer

a) Faizan has some rectangular tiles that are 20 cm long and 5 cm wide. What is the smallest number of these tiles that are needed to make a square? b) Louise has some rectangular tiles that are 7 cm long and 3 cm wide. What is the smallest number of these tiles that are needed to make a square?

Solution

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img_path = '/mnt/data/173359686645434fy8uo0.jpg' img = Image.open(img_path) img.show()I have displayed the image you uploaded. Let me analyze it for any mathematical content and provide a solution. Trying to extract text from the image using OCR (Optical Character Recognition) to analyze any math content. import pytesseract

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textThe image contains two problems related to finding the smallest number of rectangular tiles needed to form a square:

a) Faizan has some rectangular tiles that are 20 cm long and 5 cm wide. What is the smallest number of these tiles needed to make a square?

b) Louise has some rectangular tiles that are 7 cm long and 3 cm wide. What is the smallest number of these tiles needed to make a square?

Solution to Problem (a):

For Faizan’s tiles (20 cm by 5 cm):

  • To form a square using these tiles, we need to find the least common multiple (LCM) of the tile's dimensions (20 cm and 5 cm). This LCM gives the smallest square that can be tiled completely without any gaps.
  • LCM of 20 and 5 = 20.

Thus, the side of the square would be 20 cm. Now, we need to determine how many tiles are required to fill this 20 cm by 20 cm square.

  • Area of the square = 20×20=40020 \times 20 = 400 cm².
  • Area of one tile = 20×5=10020 \times 5 = 100 cm².

The smallest number of tiles required is: Area of the squareArea of one tile=400100=4.\frac{\text{Area of the square}}{\text{Area of one tile}} = \frac{400}{100} = 4.

Thus, Faizan needs 4 tiles to make the square.

Solution to Problem (b):

For Louise’s tiles (7 cm by 3 cm):

  • We need to find the least common multiple (LCM) of the dimensions (7 cm and 3 cm).
  • LCM of 7 and 3 = 21.

So, the side length of the square is 21 cm. Now, we need to determine how many tiles are required to fill this 21 cm by 21 cm square.

  • Area of the square = 21×21=44121 \times 21 = 441 cm².
  • Area of one tile = 7×3=217 \times 3 = 21 cm².

The smallest number of tiles required is: Area of the squareArea of one tile=44121=21.\frac{\text{Area of the square}}{\text{Area of one tile}} = \frac{441}{21} = 21.

Thus, Louise needs 21 tiles to make the square.


Would you like any further explanation or details? Let me know if you have additional questions!

Here are some follow-up questions for you:

  1. How do you calculate the least common multiple (LCM) of two numbers?
  2. How do you verify the correct number of tiles after calculating the total area?
  3. What is the difference between the concepts of area and perimeter when tiling?
  4. How can you solve similar problems with different dimensions?
  5. What would happen if the dimensions of the tiles were fractions or decimals instead of whole numbers?

Tip: When working with area problems like these, always make sure the units are consistent before calculating.

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Math Problem Analysis

Mathematical Concepts

Least Common Multiple (LCM)
Area Calculation

Formulas

Area of rectangle = length × width
LCM of two numbers to determine side length of the square
Number of tiles = Total area of square / Area of one tile

Theorems

LCM theorem for tiling problems

Suitable Grade Level

Grades 6-8