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A gift box is 15 inches long, 10 inches wide, and 3 inches high. How much wrapping paper is needed to wrap the gift box? A. 225 in. 2 B. 450 in. 2 C. 525 in. 2 D. 650 in. 2
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A gift box is 15 inches long, 10 inches wide, and 3 inches high. How much wrapping paper is needed to wrap the gift box? A. 225 in. 2 B. 450 in. 2 C. 525 in. 2 D. 650 in. 2
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Jun 12, 2017
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A gift box is 15 inches long, 10 inches wide, and 3 inches high. How much wrapping paper is needed to wrap the gift box?
A. 225 in. 2
B. 450 in. 2
C. 525 in. 2
D. 650 in. 2
Mathematics
high-school
Averie
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Averie
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so surface area
there are 6 faces
front face=height times legnth
back fase=front face=height times legnth
side1=side2=height times width
top=bottom=legnth times width
surface area=front face+back face+side1+side2+top+bottom=hl+hl+hw+hw+lw+lw = 2hl+2hw+2lw=2(hl+wh+lw)
l=15
h=3
w=10
subsitute
SA=2((3 times 15)+(3 times 10)+(10 times 15))
SA=2(45+30+150)
SA=2(225)
SA=450
answer is B 450 in^2
Maxine
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Jun 18, 2017
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Maxine
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