A rectangle has length 13 cm and width 9 cm. A square of side 3 cm is cut from one corner. What is the area of the remaining shape, in cm?
Answer and explanation
Correct answer: C.
- Step 1: Rectangle area: . Step 2. Square area: . Remaining area: cm. **Answer: . Why not the others:** forgets to remove the square; subtracts the side instead of its square; computes a perimeter.
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