Solve.A carpenter wants to cut the largest possible ellipse from a 16 ft by 20 ft rectangular board. After the foci are located, a string is connected to them and pulled taut by a pencil in order to draw the ellipse. Find the length of the string.
A. 16 ft
B. 20 ft
C. 40 ft
D. 32 ft
Answer: B
You might also like to view...
Solve the problem. 179 in.
Four posts are used to support a fence. Each post is 4 inches wide and the posts are evenlyspaced. If the width of the fence is 179 inches, how much space is between each post?
A. 35
inches
B. 44
inches
C. 54
inches
D. 34
inches
Find the slope-intercept form of the equation of the line with the given properties.x-intercept = 2; y-intercept = 9
A. y = - 
x + 9
B. y = - 
x + 2
C. y = - 
x + 2
D. y = 
x + 9
List all numbers from the given set that are members of the given Real Number subset.{16, 
, -22, 0, 0.
, 
} Integers
A. 16, -22, 0, 
B. 16, -22, 0
C. 16, 0
D. 16, 0, 
Solve the problem.The loudness of a sound is measured in decibels (dB). The loudness L of a sound is related to its intensity I by the equation 
where I0 = 10-12 watts per square meter (W/m2) is the intensity of the faintest sound the human ear can detect. Find the dB level of a radio at average volume from 12 feet away when it has an intensity of 
W/m2.
A. ? 103 dB B. ? 113 dB C. ? 93 dB D. ? 83 dB