The area of the rectangle is three times the area of the square. The length of the rectangle is 18 cm.
| January 30, 2021 | education
The area of the rectangle is three times the area of the square. The length of the rectangle is 18 cm. Find the width of the rectangle if the side of the square is 6 cm.
1) Calculate the area of the square using the formula: S = a² = 6² = 36 (cm²);
2) Let’s find what the area of the rectangle is equal to: 36 · 3 = 108 (cm²);
3) Determine what the width of the rectangle is equal to: in = S: a = 108: 18 = 6 (cm).
Answer: the width of this rectangle is 6 cm.
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