Find the area. Use ? ? 3.14 when needed.
A. 18 ft2
B. 15 ft2
C. 36 ft2
D. 16 ft2
Answer: A
Mathematics
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Use the appropriate formula to solve the problem.The perimeter of a rectangle is 32 cm. One side is 8 cm longer than the other side. Find the lengths of the sides.
A. 8 cm, 16 cm B. 4 cm, 8 cm C. 4 cm, 12 cm D. 7 cm, 15 cm
Mathematics
Find an equation of variation in which y varies directly as x and the following is true.y = 340, when x = 90
A. x = 250y
B. y = 
x
C. y = 
x
D. x = 
y
Mathematics
Solve the problem.The disk (x - 5)2 + y2 ? 1 is revolved about the y-axis to generate a torus. Find its volume. (Hint: 
= 
?, since it is the area of a semicircle of radius 1.)
A. 
?2
B. 5?
C. 10?2
D. 5?2
Mathematics
Complete.0.5 lb = oz
A. 12 B. 8 C. 10 D. 6
Mathematics