Answer:
46 units^2
Step-by-step explanation:
The formula for surface area of a rectangular prism is
SA = 2(lw +lh+wh) where l is length, w is width and h is height
SA = 2 (2.5* 4+ 2.5*2 + 4*2)
= 2 (10+5+8)
= 2( 23)
= 46 units^2
68,642 rounded to the nearest thousand is 69,000.
It's because 68,642 is closer to 69,000 than to 68,000.
I hope it will help you and give a clue for rounding numbers in the future ;)
Using proportions, the total acceleration you would have applied to the car would be of -33 m/s².
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
For one crash, the acceleration is of -3 m/s². Hence, for 11 crashes, the total acceleration would be of:
a = -3 x 11 = -33 m/s².
More can be learned about proportions at brainly.com/question/24372153
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