Answer:
Step-by-step explanation:
Let r be the radius of the semicircle, then 2r is the width of the rectangle. Let y be the length of the rectangle. The perimeter of the window consists of two lengths, one width and length of semicircle, then
Express y:
The area of the window is
Substitute y into the area expression:
Find the derivative A':
Equate A' to 0:
When 
then 
and the function A is increasing, when 
then 
and the function A is decreasing. This means that at point the function A takes it maximal value (the area is maximal).
Answer: 53.6
Explanation:
When given a side and its opposing angle and another angle, to find its opposing side you may use the sine rule.
sin(Angle)/opposing side = sin(Angle)/opposing side
Applying this formula will give us the following:
1) sin90/x = sin66/49
2) 1/x = 0.01864
3) 1/0.01864 = x
4) x ≈ 53.6
Hope this helps, brainliest would be appreciated :)
Step-by-step explanation:
sq yd sq ft
560.00 5,040
560.05 5,040.5
560.10 5,040.9
560.15 5,041.4
560.20 5,041.8
560.25 5,042.3
560.30 5,042.7
560.35 5,043.2
560.40 5,043.6
560.45 5,044.1
560.50 5,044.5
