Answer:
<h2>S.A. = 234 mm²</h2>
Step-by-step explanation:
The formula of a surface area of a rectangular prism:

l - length
w - width
h - height
We have l = 15 mm, w = 3 mm, h = 4 mm. Substitute:

Would it be 270? if you take 90 3 times. due to that there are 3 different durations.
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Answer:

Step-by-step explanation:
