Determine the time that elapses until half of of the element remains (pre-calc) GIVEN: a piece of charcoal is at 32% of what it originally had, 5800 years half life

what I found: k= -0.000119508, tree dies 9534 years ago

I need to know in years how long until half of the element remain please.
THANKS!!

here is your answer hope it's helpful for you

abde or 1,2,4, 5 is the answer

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