Answer:
The answer is circle.
Step-by-step explanation:
For all the rest of the shapes, we use certain base x height formulas. Square uses base x height along with parallelograms and trapezoids. For a triangle, we use . Though, for a circle, we use the formula where r= radius.
The girls collected 182 pounds of rocks more the second weekend of hiking compared to the first weekend of hiking.
312 + 234 = 546
615 + 113 = 728
728 - 546 = 182
182 lbs