Solve the problem.The function A described by A(s) = s2   gives the area of an equilateral triangle with side s. Find the area when a side measures 18 cm.

A. 243 cm2
B. 9 cm2
C. 4.5 cm2
D. 81 cm2

Answer: D

Mathematics

You might also like to view...

Find the volume of the indicated region.the region bounded by the coordinate planes and the planes , 

A.
B.
C. 9
D.

View
Mathematics

Solve the problem.The northern third of Indiana is a rectangle measuring 96 miles by 132 miles. Thus, let  Assuming that the total annual snowfall (in inches), S(x,y), at  is given by the function S(x,y) = 60e-0.001(2x + y) with (x,y) ? D, find the average snowfall on D.

A. 52.06 inches B. 51.14 inches C. 52.44 inches D. 51.78 inches

View
Mathematics

The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 12 sin t - cos tFind the body's acceleration at time t = ?/4 sec.

A. -   m/sec2
B.   m/sec2
C. -   m/sec2
D.   m/sec2

View
Mathematics

Find the indicated derivative.Find y " if y = 6x sin x.

A. y " = 6 cos x - 12x sin x B. y " = - 6x sin x C. y " = - 12 cos x + 6x sin x D. y " = 12 cos x - 6x sin x

View
Mathematics