Answer:
<em>1,172.5cm²</em>
Step-by-step explanation:
Total surface area of a box = 2(LW + WH + LH)
L is the length = 11.5cm
W is the width = 7cm
H is the height = 1.5cm
Substitute
TSA = 2(11.5(7) + 7(1.5) + (11.5)(1.5))
TSA = 2(80.5+10.5+17.25)
TSA = 2(117.25)
TSA = 234.5cm²
<em>Hence the total surface area of a stack of five such compact disc boxes will be 5(234.5) = 1,172.5cm²</em>
You did not complete your question but I think this is what you are looking for. View the image.
Answer:
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Got two types of info here $ and #buttons
Line them accordingly and then cross multiply
a.
$18/12 dozen buttons =
$ x /4 dozen buttons
X= 4•18/12= $6
b.
$18/12 dozen buttons =
$ x/50 dozen buttons
X=18•50/12= $75
c.
$18/12 dozen buttons =
$27/x dozen buttons
X=27•12/18=18 dozen buttons
