Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8?
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<h2><em><u>Answer:</u></em></h2>
Total Surface Area = 375
You need to find the area of the ceiling, floor, the two rectangle walls and the two trapezoid walls
<u>Area of the ceiling:</u>
c = length * width
c = 9*6.5 = 58.5
<u>Area of the 2 rectangle walls:</u>
w = 2(length * width)
w = 2(9 * 8)
w = 2(72)
w = 144
<u>Area of floor:</u>
f = 9 * 7.5
f = 67.5
<u>Area of the two trapezoids:</u>
a = 6.5
b = 7.5
h = 7.5
Total Surface Area = c + w + f + t
Total Surface Area = 58.5 + 144 + 67.5 + 105
Total Surface Area = 375
Let's breadth be x
- Length be x+2
ATQ
- Use completing the square method
- As it's dimensions we will take positive
- x+2=3.8+2=5.8
Now
- Length of 1 strip=13m
Total strips
- She needs 2 strips