In calm waters oil spilling from the ruptured hull of a grounded tanker spreads in all directions. If the area polluted is a circle and its radius is increasing at a rate of 5 ft/sec, determine how fast the area is increasing when the radius of the circle is 40 ft.
?
A. 200 ft2/sec
B. 200 ft2/sec
C. 400? ft2/sec
D. 400 ft2/sec
Answer: C
Mathematics
You might also like to view...
Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the parabola x = y2 and the line x = 16
A. 
= 
, 
= 0
B. 
= 16, 
= 0
C. 
= 0, 
= 
D. 
= 
, 
= 0
Mathematics
Find the marked price and sales tax. Round to the nearest cent.Total Sale: $2617.70Sales Tax Rate: 6%
A. $2446.45; $171.25 B. $2493.05; $124.65 C. $2469.53; $148.17 D. $1636.06; $981.64
Mathematics
Perform the operation and reduce to lowest terms.10
× 1
A. 19
B. 10
C. 18
D. 20
Mathematics
Simplify and add or subtract wherever possible.6
+ 3
A. 3
B. -15
C. 15
D. 9
Mathematics