A' (3(-5),3(-4))= (-15,-12)
B' (3(2),3(6))=(6,18)
C'(3(4),3(-3))=(12,-9)
You haven't told us whether the rectangular prism is the size of a pack of gum or more like the size of a cruise ship.
Whatever size it is, here's the number of centimeter squares you need to cover the whole outside of it:
(2 x length x width) + (2 x length x height) + (2 x width x height)
with all measurements made in centimeters.
Each strip is 29 cm
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Change the m to cm
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6 m = 600 cm
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Find the number of strips for 1 6m-board
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Find the number of strips that can be cut from the 6m board.
600 ÷ 29 = 20 pieces remainder 20cm
So we can only cut 20 pieces of 29 strips from one 6m board.
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Find number of boards needed
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70 ÷ 20 = 3.5
We need 3.5 of the 6m boards.
Since she can't have half a board, she has to buy 4 pieces of the board.
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Answer: 4 pieces of the 6m board.
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#3
6 x 4 - 4
First multiply 6 x 4
24 - 4
———
5
Subtract the top
20
—
5
Then divide it
