5 x 3 = 15 sq units
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Further information is needed to provide an answer to this question. If the area is 140 sq units, then this could be formed from a rectangle 1 unit wide by 140 units long - giving a perimeter of 2 x 140 + 2 x 1 = 282 units. But, the rectangle could be 14 units wide and 10 units long giving a perimeter of 2 x 14 + 2 x 10 = 48 units.
find the perimeter and area of a rectangle that is 15cm long and 5cm wide
32 metres
The area of the rectangle is: 9 times 8 equals 72 meters squared.
Area of rectangle: 9 times 8 = 72 square metres