The two rectangles are of equal length, the width of the first is 2.8 dm, and its area is 9.8 dm2
| April 30, 2021 | education
The two rectangles are of equal length, the width of the first is 2.8 dm, and its area is 9.8 dm2. Find the area of the second rectangle if its width is 8.4 dm.
The formula for determining the area of a rectangle looks like this:
S = a * b.
Substitute the known values into this formula to find the equal lengths of these rectangles.
9.8 = a * 2.8.
a = 9.8 / 2.8.
a = 3.5 dm.
Determine the area of the second rectangle by substituting the known and found length values.
S = 3.5 * 8.4 = 29.4 dm2.
Answer: the area of the second rectangle is 29.4 dm2.
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