The area of a rectangle is 252 cm², and the length is 3 less than 2 times the width. Find the dimensions of the rectangle.

21cm, 12cm

Step-by-step explanation:

width=x cm

length=2x-3 cm

area = 252cm²

l*b = 252 cm²

(2x-3) (x) = 252

2x²-3x = 252

this is how I did it

we need to find the nearest square of the number (it should be lesser than the area)

that is 225, whose square root is 15.

since there is a coefficient to the x², the value of x would be calculate like this 15 - (2+1) = 15-3 = 12

x = 12

we can verify it too,

2 * (12) ² - 3*12=252

288-36=252

252=252

therefore width is 12 cm and width is 2*12-3 = 24-3 = 21 cm

verify;

21*12 = 252

252=252

hence the dimensions are 12 am (width) and 21 cm (length).