Three hundred feet of fencing is available for a rectangular pasture alongside a river, the river serving as one side of the rectangle (so only three sides require fencing). Find the dimensions yielding the greatest area. (Enter your answers as a comma-separated list.)

(150 feet,75 feet)

Step-by-step explanation:

Let

Length of rectangle pasture,l=y

Breadth of rectangle pasture,b=x

Fencing used=300ft

Fencing used=2x+y

300=2x+y

y=300-2x

Area of rectangle pasture=xy

Differentiate w.r.t x

Again, differentiate w.r.t x

Hence, the area is maximum at x=75

Width of rectangle pasture,x=75 feet

Length of rectangle pasture,l=300-2(75)=150 feet

Dimension of rectangle pasture=(l,b)=(150 feet,75 feet)

b

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice