The area of the rectangle ABCD is 21 cm2. A rectangular piece was cut off from it, the dimensions
| July 15, 2021 | education
The area of the rectangle ABCD is 21 cm2. A rectangular piece was cut off from it, the dimensions of which are 2 cm long and 4 cm wide. What is the area of the remaining.
The problem says that a rectangular piece was cut off and the length and width of the cut piece are known. Let’s find what the area of the cut piece is equal to:
2 * 4 = 8 cm².
In the problem, the area of the rectangle ABCD and the area of the cut rectangular piece are known. Let’s find what the area of the remaining piece is equal to:
21 – 8 = 13 cm².
Answer: the area of the remaining piece is 13 cm².
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