The variable a is jointly proportional to the square of b and c. If a=46 when b=3 and c=5 , what is the value of a when b=8 and c=6 ? Round your answer to two decimal places if necessary.

Answer 1

45=9(25)k

k=1/5=.20

a=(b^2)(c^2)/5

a= .2(b^2)(c^2)