Exploring Some Geometric ThemesClass 8 Mathematics Case Study Questions
10 Questions
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Case 1 of 10
Case Study7 marks
The Sierpinski Carpet Design
A digital artist is creating a background pattern based on the Sierpinski Carpet. She starts with a solid black square of side length cm. In Step 1, she divides it into 9 smaller equal squares and removes the central one, leaving a white hole. In Step 2, she repeats this process for each of the remaining 8 black squares. This iterative process creates a detailed, self-similar fractal pattern. The artist wants to calculate the properties of her design after a few steps to plan her composition.
Questions on this case
1(1 mark)MCQ
How many black squares remain after Step 1?
2(1 mark)
What is the side length of one of the smallest black squares after Step 2?
3(1 mark)
What is the total number of white holes in the design after Step 2?
4(2 marks)MCQ
What is the total area of the black squares remaining after Step 2?
5(2 marks)
If is the initial area, what is the formula for the area remaining, , after Step ?
Case Study7 marks
The Koch Snowflake Fence
A park is being enclosed by a unique fence designed using the initial steps of a Koch Snowflake. The design starts with a large equilateral triangle (Step 0) with each side measuring meters. To create Step 1, each of the 3 sides is divided into three equal segments. The middle segment is removed and replaced by two sides of an equilateral triangle pointing outwards. This process is repeated on every straight segment to get more intricate designs. The park management needs to calculate the fence's length for budgeting.
Questions on this case
1(1 mark)MCQ
What is the total number of sides of the shape in Step 1?
2(1 mark)
What is the length of one of the smallest straight segments of the fence in Step 1?
3(1 mark)
What is the total length (perimeter) of the fence in Step 1?
4(2 marks)MCQ
What is the perimeter of the fence in Step 2?
5(2 marks)
If the side length of the initial triangle is , what is the formula for the number of sides, , at Step ?
Case Study8 marks
Architectural Sculpture Design
An architect is designing a modern sculpture for a museum courtyard using identical cubic blocks. The final structure is assembled as follows: The base is a 2x2 square. The back-left pillar is 3 blocks high. The back-right pillar is 1 block high. The front-left pillar is 2 blocks high, and the front-right pillar is also 1 block high. To create the construction blueprints, the architect needs to draw the orthographic projections: the front view, the top view, and the side view (from the right). The direction you are looking from to see the front-left and front-right pillars is the 'Front' view.
Questions on this case
1(1 mark)MCQ
How many cubes are used in total to build the sculpture?
2(1 mark)MCQ
Which of the following describes the Top View?
3(2 marks)
What does the Front View look like?
4(2 marks)
What does the Side View from the right look like?
5(2 marks)
If a single cube is added on top of the front-left pillar, how many cubes are there in total and what is the new Front View?