The area of a rectangular window is 6525cm2. if the length of the window is 87cm, what is its width?

The width of the rectangular window is 75 cm.

Solution:

Given,

Area of rectangular window =

Length of the rectangular window = 87 cm

To find: The width of the window

Assume length as l; width as w and area as A.

The formula for the area of a rectangle,

From the given,

On solving for w,

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

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