If I understand the question properly, the answer is 4.5
Yeah Im pretty sure it is
Answer:
The width is 5m and the length is 10m.
Step-by-step explanation:
Rectangle:
Has two dimensions: Width(w) and length(l).
It's area is:
The length of a rectangle is 5m less than three times the width
This means that 
The area of the rectangle is 50m^(2)
This means that 
. So
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
.
This polynomial has roots 
such that 
, given by the following formulas:
In this question:
So
Dimension must be positive result, so
The width is 5m(in meters because the area is in square meters).
Length:
The length is 10 meters
This is quite easy as it is simply knowing the formulas to solve different portions of the circle.
(A) To solve for circumference, the formula is d*pi where d is the diameter. The diameter is simply twice the radius, so we can just double 11 for it. This means 22 is the answer.
(B) The formula for area of a circle is pi*r^2, so for this one, we just need to square the radius. 11 squared is 121.
(C) To solve this, we should solve for the area of the circle, and then multiply it by 3 to represent the 3 dollars. To solve the area, we just substitute 11 into the formula for r. Afterwards, we should multiply it by 3 for the reason above. However, because we used 3.14 instead of pi, we must say the cost is approximately $1139.82. <span />
