Here is a sequence of increasingly large similar rectangles.
For each iteration, the new rectangle width is larger than the previous rectangle width at a ratio of 5:2
1. If the area of the first rectangle is 20cm2 and the width of the third rectangle is
15.625 cm, find the length and width of the second rectangle.
2. What is the area of the 10th rectangle in the sequence?
The area of the smallest square is 16cm2
The outer square is an enlargement of the smallest square, with a scale factor of 5.
Find the length of the red line.
Assume all adjacent squares are equidistant from each other.
Find the area of the purple shaded region.Assume all 5 sections are identical.
Assuming that face A has rotational symmetry of order 2, calculate the surface area of the whole three dimensional shape.
Welcome to my new blog. I’ll be posting challenging maths questions or puzzles aimed at GCSE students. Can you solve this one?