Answer:
Step-by-step explanation:
The given statement is the scale factor:

This can be rearranged to the formula ...

Filling in the given scale distances, you find the actual distances to be ...

The volume for this Pyramid is 1200 cubic centimeters.
Answer:
The amount present in a sample of 401 grams after 25 years is
Step-by-step explanation:
we have
A(t) -----> the amount, in grams, of polonium 210 present in a given sample
t -----> the time in years

we know that
To find out the amount present in a sample of 401 grams after 25 years, substitute the value of t=25 years in the equation and solve for A(t)
For t=25 years