The perimeter of a rectangle is 46 cm and its diagonal is 17 cm. What is the area of the rectangle?
Answer and explanation
Correct answer: A. 120 cm^2
- Step 1: Let length and width be and . Perimeter . Diagonal .
- Step 2: Expand .
Answer
120 cm^2.
Why not the others: '110 cm^2' subtracts incorrectly; '130 cm^2' and '140 cm^2' arise from arithmetic errors in squaring 23.
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