Width = 4.5 yards
Length : 12 yards
Step-by-step explanation
the area of a rectangle is given by:
so
Step 1
a)
Let l represents the length
let w represents the width
so
I)the area of the rectangle is 54
replace
ii)the length of the triangle is 3 yd more than twice the width ( in other words you have to add 3 to twice the width to obtain the length)
so
Step 2
Solve the equations
a) replace the l value form equation (2) in equaiton(1)
now, we have a quadratic equation, we can use the quadratic formula
Width = 4.5 yards
b) now, replace in equation(2)
therefore, the answer is
length : 12 yards
I hope this helps you