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Area of a rectangle = length x width If length = L and width = W, then Area = L x W For this case, the length is 4 cm longer than the width. Therefore, L = W + 4cm Replace length in the area equation at the top with this new L value: Area = (W + 4cm) x W Area = W^2 + (4cm) x W And area is 8 cm^2 (I assume you meant to say 8cm^2 is the area) Then: 8cm^2 = W^2 +4W This is a quadratic equation (because of the w^2 value), if you solve for W using the quadratic formula (Google it), you get W = 1.464cm Therefore, the length L = W + 4cm = 1.464cm + 4cm = 5.464cm Dimensions are L = 5.464cm and W = 1.464cm

Q: A rectangle is 4cm longer than it is wide what are the demesions if the area is 8cm?

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The area of a rectangle is often defined to be the product of its length times its width. Making the area of the rectangle a definition rather than a theorem which would have to be proved from presumably more basic assumptions seems right to me.

Not necessarily. In fact, if a rectangle and parallelogram have the same base and height, their areas are equal.

yes it can; a rectangle 5 by 2 has perimeter 14 and area 10 for example; a rectangle 10 by 2 has perimeter 24 and area 20, both greater.

Of course, a rectangle can have a greater perimeter and a greater area. Simply double all the sides: the perimeter is doubled and the area is quadrupled - both bigger than they were.

4 cm

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The equation for the area of the rectangle is A = Y2 + 4 Y. A = L * W = (Y + 4) (Y)

Area of a rectangle is length times width, therefore if the length is two feet longer than the width then the length is 9 and the width is 7, when they are multiplied you get 63

Perimeter of a rectangle is 2(l+b).Area of rectangle is 216 centimeter square.

width is 5 feet

yes it just means that it is longer and taller

Area of a rectangle: length times width Width=11 Length= 11x3= 33 11x33= 363 square feet

= If a rectangle is 10 meters longer than its width what is its width? =

The width is 6 feet. The length is 8 feet.

The length is 7 feet and the width is 5 feet

Without further information it is impossible to say (exactly): If the rectangle was 0.5 x 6.5, its perimeter is 14 units and its area is 3.25 units2 If the rectangle was 1 x 6, its perimeter is 14 units and its area is 6 units2 If the rectangle was 2 x 5, its perimeter is 14 units and its area is 10 units2 If the rectangle was 3 x 4, its perimeter is 14 units and its area is 12 units2 If the rectangle was 3.5 x 3.5, its perimeter is 14 units and its area is 12.25 units2 (and it's a square). It all depends upon the lengths of the longer and shorter sides of the rectangle: as long as 2 x longer + 2 x shorter = 14, any area greater than 0 units2 and less than or equal to 12.25 units2 can be made.