140 * 0.15 = 21
15% of 140 is 21
The answer would be 32 because the parenthesis are just there because its negative and 2 negatives multiplied together make a positive :)
The formula for area is length times width, therefor since you already have the length, all you do is 433.37 / 28.7 which = 15.1
Answer:
I took apart the shapes to make them rectangular prisms then did length x width x height. Added both of the volumes of each cut down shape and put them in order. The image above this shows the volumes of each shape.
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