The function f (x )equals 1000 (0.5 )Superscript StartFraction x Over 30 EndFraction describes the amount, f(x), in kilograms, of a radioactive element remaining in the area x years after 1982. If even 100 kilograms of the radioactive element remains in the atmosphere, the area is considered unsafe for human habitation. Find f(40) and determine if the area will be safe for human habitation by 2022.

40 years after 1982, there is 396.85 kilograms of  radioactive element remaining. The area will not be safe for human habitation by 2022.

Step-by-step explanation:

We are given the following in the question:

where f(x) is the amount of normal curve cannot be used as an approximation to the binomial probability. in kilograms  x years after 1982.

We have to approximate f(40)

Putting x = 40, we get

Thus, 40 years after 1982, there is 396.85 kilograms of  radioactive element remaining.

With 100 kilograms of radioactive material, the area is unsafe for humans.

Thus, the area will not be safe for human habitation by 2022.

its not b

step-by-step explanation:

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2