Asked by Thomas
When wrapping a birthday gift in the shape of a rectangular prism for
his mother, Kenji adds an additional 2.5 square feet of gift wrap to allow for overlap.How many square feet of gift wrap will Kenji use to wrap a gift 3.5 feet long, 18 inches
wide, and 2 feet high?
In this worksheet I've been using the formula SA= Ph + 2B, but apperently it doesn't work for this question. I saw a similar post and it was compeletely different. They did:
2(3.5 * 1.5) = 10.5
2(1.5 * 2) = 6
2(2 * 3.5) = 14
+2.5 = 33 square feet
But I am wondering where they're getting the 1.5 from and what these formulas are. Please help.
his mother, Kenji adds an additional 2.5 square feet of gift wrap to allow for overlap.How many square feet of gift wrap will Kenji use to wrap a gift 3.5 feet long, 18 inches
wide, and 2 feet high?
In this worksheet I've been using the formula SA= Ph + 2B, but apperently it doesn't work for this question. I saw a similar post and it was compeletely different. They did:
2(3.5 * 1.5) = 10.5
2(1.5 * 2) = 6
2(2 * 3.5) = 14
+2.5 = 33 square feet
But I am wondering where they're getting the 1.5 from and what these formulas are. Please help.
Answers
Answered by
Steve
18" = 1.5 ft
So, the area of the box is
2(3.5*1.5 + 3.5*2 + 1.5*2) = 30.5 ft^2
Or, using the Ph+2B, we have
2(3.5+1.5)*2 + 2(3.5*1.5) = 30.5
ft^2
Now add the 2.5 to get 33 ft^2
The first formula uses the fact that you have two sets of rectangular faces. The area of each face is its length*width
The second formula (Ph+2B) uses the idea of unwinding the sides of the box. Then you have a rectangle with length equal to the perimeter of the base, and height that of the box.
The 2B is just the area of the top and bottom.
So, the area of the box is
2(3.5*1.5 + 3.5*2 + 1.5*2) = 30.5 ft^2
Or, using the Ph+2B, we have
2(3.5+1.5)*2 + 2(3.5*1.5) = 30.5
ft^2
Now add the 2.5 to get 33 ft^2
The first formula uses the fact that you have two sets of rectangular faces. The area of each face is its length*width
The second formula (Ph+2B) uses the idea of unwinding the sides of the box. Then you have a rectangle with length equal to the perimeter of the base, and height that of the box.
The 2B is just the area of the top and bottom.
Answered by
Math
They get the 1.5 from the 18 inches. You need to convert everything to "like units" and this problem has inches and feet. So they converted 18 inches into 1.5 feet.
Answered by
Kid
nope
Answered by
💂🤴❣️👸Princess🤴❣️👸💂
wym nope?
Answered by
💂🤴❣️👸Princess🤴❣️👸💂
KID IS FROM THE FUTURE
Answered by
💂🤴❣️👸Princess🤴❣️👸💂
HE IS FROM JUNE 2 2020
(relizes that it is 2021 now)
(relizes that it is 2021 now)
Answered by
💂🤴❣️👸Princess🤴❣️👸💂
I am really not smart
🤣
🤣
Answered by
Bruh
Bruh get some friends
Answered by
Steve
Stop cyber bulling
Answered by
no one
why so mean and also to be honest we all need friends soo no one can really say anything.
Answered by
someone
you are not wrong but i do have friends
Answered by
human
I´m not sure if the answer is correct because it just said it was wrong
Answered by
human
i need friends mine called me fake
Answered by
no one
well are you fake?
Answered by
bro what the
BRO WHAT THE HE-
Answered by
Bot
I'm sorry, please try to be respectful in your comments. It's not appropriate to use offensive language.
Answered by
bro what the
BRO WHAT THE H-
Answered by
Bot
Please try to refrain from using offensive language. If you have a question or concern, feel free to ask.
Answered by
bro what the
oh yeah more
Answered by
Bot
What other questions can I help you with?
Answered by
bro what the
d-
Answered by
Bot
I'm sorry, I'm not sure what you're trying to communicate with "d-". Can you please ask a question or provide more context?
Answered by
minor
um this was a math question what is wrong with you people
Answered by
Bot
I apologize for any confusion. Do you still need assistance with the math problem?
There are no AI answers yet. The ability to request AI answers is coming soon!