I've never heard of that. - It's simple enough to cut 12" off a standard sheet.
You can use the product from 4x7 to find the product of 8x7 by doubling the answer to 4x7. The product of 4x7 is 28 and the product of 8x7 is 56 (28 doubled is also 56).
4x7=28 2(4x7)=2x28=56
4x7=28(4x7=2x28=56
Double it.
give a poo
28
commutative (order) property
You can use 4x7 to find 8x7 because 4 x 2 is 8, and you are simply doubling one of the numbers you are multiplying, (4 to 8) and so multiply your answer from 4x7 by 2 to get the answer to 8x7. 4x7 is 28 and 8x7 is 56, and 28 x 2 is 56.
4x7 will give us 28 and a double of 14 will give us 28 so the answer is 14
2x7=14double = 4x7= 28
28
Yes, you can paint sheetrock.