Solve the problem, using 3.14 for ?. Round to nearest tenth unless instructed differently.Find the cost to asphalt a circular racetrack if asphalt costs $90 per 100 ft2. (Use 3.14 for ?. Round to the nearest dollar.) r = 85 ft R = 140 ft
A. $34,195
B. $55,390
C. $34,972
D. $20,418
Answer: C
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Solve the initial value problem.Differential Equation: 
= (-cos t)i + (4t3+ 8)jInitial Condition: r(0) = 4j
A. r(t) = (sin t)i + (12t2 + 4)j B. r(t) = (-sin t)i + (t4+ 8t + 4)j C. r(t) = (-sin t)i + (t4 + 4)j D. r(t) = (-sin t)i + (t4)j
Solve the problem.A diving pool that is 10 m deep and full of water has a viewing window on one of its vertical walls. Find the force on a square window, 2.5 m on a side, with the lower edge of the window 1 m from the bottom of the pool.
A. 940,187.5 N B. 232,750 N C. 474,687.5 N D. 707,437.5 N
Simplify.
2 ? 
A. - 
B. - 
C. 
D. 
For the given question, determine whether an Euler circuit, a Hamilton circuit, or neither would solve the problem.The vertices of a graph represent displays at a natural science museum and the edges represent hallways and walkways connecting the displays. A visitor wants to visit each display exactly once, returning to her starting point when she is done.
A. Euler B. Neither C. Hamilton