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Q: When a rectangle's length is double and the width stays the same it's perimeter increases by 15 cm. How many centimetres longer is the new rectangle than the older one?
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Related questions

What are the rectangles found by the greek that have the same perimeter and length?

No rectangle can have equal perimeter and length.


How many different rectangles are there if the perimeter of the rectangle equals the area of the rectangle?

Infinite amounts.


Can two rectangles to have the same area without the same perimeter?

Yes. Take a simple rectangle of 1cm x 6cm. It's area is 6cm2 and its perimeter is 14cm. Now - a rectangle if 2cm x 3cm has the same area, but has a perimeter of just 10 Centimetres !


Can rectangles with the same perimeter have different areas?

Yes. Say there are two rectangles, both with perimeter of 20. One of the rectangles is a 2 by 8 rectangle. The area of this rectangle is 2 x 8 which is 16. The other rectangle is a 4 by 6 rectangle. It has an area of 4 x 6 which is 24.


Do these rectangles have the same perimeter-12metersx4meters and 13 metersx3meters?

The perimeter of a rectangle is the sum of its four sides. Add the sides for both rectangles, then compare the results.


Can a rectangles perimeter be the same as the area?

Yes, it can because a 3 by 6 rectangle has the perimeter of 18 and has the area of 18! :)


27.8 meters by 34.2 meters What is the perimeter?

Assuming the figure is a regular rectangle, the perimeter of the rectangle will be (27.8 + 34.2) x 2 = 124 centimetres.


What is a rectangles dimensions if it has a area of 45 and a perimeter of 36?

It is a 3 x 15 rectangle !


What is the perimeter of a rectangle whose area is 21?

That depends on the rectangle! You can have different rectangles with the same area, but with different perimeters.


What is the relationship for perimeter and area for rectangle?

There is no relationship between the perimeter and area of a rectangle. Knowing the perimeter, it's not possible to find the area. If you pick a number for the perimeter, there are an infinite number of rectangles with different areas that all have that perimeter. Knowing the area, it's not possible to find the perimeter. If you pick a number for the area, there are an infinite number of rectangles with different perimeters that all have that area.


What is the perimeter of a rectangle with a length of 7 and width of 4?

Rectangles Perimeter Is 2L + 2W. 2(7) + 2(4) = Perimeter 14 + 8 = Perimeter Perimeter = 22


What is the best algebraic representation of the rectangles perimeter?

It is: 2(x+y) = perimeter whereas x is the width and y is the length of the rectangle