The perimeter of a rectangle is 40 m. If its length is four metres less than five times its breadth, then find the area of the rectangle.

64m ^ 2

Step-by-step explanation:

Let, breadth of rectangle is x, then 5x−4 be the length of the rectangle.  

Perimeter of rectangle =2(l+b)

⇒40=2(l+b)

⇒40=2(5x−4+x)

⇒40=12x−8

⇒12x=40+8

⇒12x=48

⇒x=  

12

48

​  

⇒x=4

Breadth =4 meters  

Hence, length =5×4−4=20−4=16m

Therefore, area of rectangle =lb=16×4=64m ^2

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

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step-by-step explanation:

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