An important tool in understanding the actual numerical dates of past geologic events is radioactivity.
Answer:
ITA THE SECOND ON THE THIRD LINE
Explanation:
Answer:
Remember that perimeter is the measure of the outer edge of a shape, or otherwise, the sum of the measures of the sides of the trapezoid. Representing the perimeter by P, and the sides as a, b, c and d, our formula is P = a + b + c + d.
