Mathematical Reasoning · sample 1
A rectangle is cut along the dotted lines into four identical squares in a row.
The perimeter of the whole rectangle is 60 cm.
The perimeter of the whole rectangle is 60 cm.
What is the perimeter of one of the small squares?
- A: 30 cm
- B: 12 cm
- C: 24 cm
- D: 15 cm
- E: 28 cm
Show the answer and working
Answer: 24 cm
Working: The rectangle is 4 squares long and 1 square high, so its perimeter is 4 + 4 + 1 + 1 = 10 sides of a square, that is 10 x side = 60 cm. One side is 6 cm, so one square has perimeter 4 x 6 = 24 cm.