The half-life of radium is 1600 years. if the initial amount is q0 milligrams, then the quantity q(t) remaining after t years is given by q(t) = q02kt. find k. k =

Step-by-step explanation:

Given data:

half life of radium is 1600 year

the equation is given as

As it is given, quantity is going halved, thus k is is going to be -ve. thus equation become

we know that

    ....1

as it is half life so we have

     ......2

comparn 1 and 2 we get

1  = - k(1600)

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

answer:

step-by-step explanation: