Can somebody please help me. I have less then 10 mins to get the right answer

Mathematics

2 answers:

Dafna1 [17]3 years ago

8 0

the bottom cube = 5in

middle=4

top =5

5+4+5=14in

iVinArrow [24]3 years ago

5 0

The stack is 3 inches high, and thus has four vertical rectangular areas 3 by 1 in^2 each, which constitutes a total vertical surface area of 4(3 in^2), or 12 in^2. Twice the area of the base is 2(1 in^2) = 2 in^2.

Combine 12 in^2 and 2 in^2: 14 in^2 is the total surface area of this 3-d object.

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We know that

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therefore

the answer is
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