What was the sensitive, well-insulated tool willard f. libby used to date artifacts with known ages? x-ray machine richter scale geiger-müller tubes petri dish

this is answer of 144 cubic meters

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !