glowbaby123
20.08.2019 •
Mathematics
Ablueprint for a house states that a 6 inch line represent 11 2/3 feet on the actual home. if the house is to be a total height of 20 feet, how many inches high would it be on the blueprint.
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Ответ:
Let x = number of inches high the house would be on the blueprint.
6 inches/x = 11_2/3 feet/20 feet
Rewrite 11_2/3 feet as 35/3 feet.
6/x = (35/3)/20
x(35/3) = 6(20)
x(35/3) = 120
35x/3 = 120
35x = 120(3)
35x = 360
x = 360/35
Can you finish now?
Ответ:
A = πr^2
A = π(8^2)
A = 64π
Area of shaded:
135/360 = x / 64π
360x = 8640π
x = 24π
Answer
B. 24π