Answer:
9-2b
Step-by-step explanation:
Set up equation:

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Answer:
C
Step-by-step explanation:
To find the area of a composite figure, separate it into the regular parts which make the irregular shape. This shape is composed of a semi-circle and a rectangle. Find the area by finding the area of each shape.
Semi-circle:
The semi-circle has a diameter of 2 + 4 + 2 = 8. The area this figure uses the radius which is half the diameter. The radius is 4. To find the area substitute r = 4 into
. However the semi-circle has a smaller circle cut out of it with radius 2. The area of the smaller circle is
. The semi circle in the shape is the areas subtracted which equals 12π.
Rectangle:
The area of the rectangle is found using A = b*h = 2*5 = 10.
The total area is 12π + 10 meters squared.
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The ratio 5/6 is equivalent to 275/330
5:6 ⇔ 275:330
Answer:
Total cost F (w) = 160/w + 200* √(2w)
Step-by-step explanation:
Volume in cubic feet
V (box) = x*y*w and square base means x=y so V= 2 = x^(2)*w
hence x^(2) = 2/w (1)
Area of base and top in square feet, and cost in $
Area(t+b) = 2*x*y = 2x^(2) C(1) = Cost of ( base + top) C(1) = 40*2x^(2)
C(1) =80*x^(2) and from eq. 1
C(1) = 80*2/w = 160/w
Area of sides = 4 * x* w = 4*√((2/w))*w
C(2) = Cost of sides. is: C(2)= 50*4*√((2/w))*w C(2) = 200* √2w
Total Cost = F(c) = 160/w +200*√2w