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A rectangle has an area of 378 square meters and a width of 9 meters. If the width is increased to 15 meters and the length remains unchanged, the expanded area will be 9 meters
Length: 378 △ 9 = 42m
Expanded area: 42x15 = 630 square meters
2. In the figure below, the width of the rectangle is increased to 56 meters, and the length remains unchanged. What is the expanded area? The original area is 252 square meters, and the original width is 7 meters
First, find out the length of the original rectangle 252 / 7 = 36 (m), then multiply the length by the increased width 36 * 56 = 2016 (M2), and the expanded area is 2016 m2
If the width of a rectangle is increased by 4 cm and the area is increased by 28 square cm, we can get a square. What is the area of the original rectangle?
Length: 28 △ 4 = 7 (CM)
Width: 7-4 = 3 (CM)
Area: 7 × 3 = 21 (square centimeter)
If the width of a rectangle is increased by 4cm, the area will be increased by 28cm. At this time, it happens to be a square. What is the area of the original rectangle
21 square centimeters
The length of the original rectangle is 28 divided by 4 = 7 cm
The width is 7-4 = 3cm
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