Answer:
9
Step-by-step explanation:
radius is half of the diameter
Answer: A) 186.75 feet
Step-by-Step Explanation:
1 foot = 12 inches
1 inch = 1/12 foot
Therefore, Inches to Feet :-
= 2241/12
= 186.75 feet
Let each side perpendicular to the river be "x".Then the side parallel to the river is "400-2x".
The formula for Area = width*length
A(x) = x(400-2x)
A(x) = 400x - 2x^2
You have a quadratic with a = -2 and b = 400
Maximum Area occurs where x = -b/2a = -400/(2*-2) = 100 ft. (width)
length = 400-2x = 400-2*100 = 200 ft (length)
4x^2-5x=-1
4x^2-5x+1=0
4x+2.24x=1
6.24x=1
x= 0.16025641025641025641025641025641
