Determine the area or volume as indicated. Use 3.14 for ? when necessary.
Find the area.
A. 16.5 cm2
B. 42 cm2
C. 77 cm2
D. 21 cm2
Answer: D
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Solve. Use ? = 3.14159 as needed.A grain conveyor 85 feet long is designed to reach the top of a grain bin 40 feet high with a radius of 10 feet. As shown in the figure, the conveyor extends to the center of the top of the bin. How far from the front edge of the bin should the base of the conveyor be placed? Express your answer in feet and inches, rounded to the nearest inch.
A. 64 feet B. 64 feet 9 inches C. 65 feet D. 65 feet 3 inches
Solve.The number B (measured in thousands) of a certain type of endangered bird can be approximated by the equation B = 1.13x2 + 3.8x + 6.94, where x is the number of years after 1998. How many birds does the equation predict there will be in the year 2003?
A. 47,250 birds B. 38,990 birds C. 54,190 birds D. 31,590 birds
Simplify the expression using the order of operations.(-32 ÷ 4) - (3 ÷ 3)
A. -8 B. -9 C. 7 D. 8
Find an equation of the inverse relation.y = 5x2 - 2x - 9
A. x = 5y2 - 2y - 9 B. x = 5y2 + 2y + 9 C. y = 5x2 + 2x + 9 D. x = 5y2 - 2x - 9