143 square feet is about 15.8 square yards.
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143 square feet. Multiply the length by the width. The result is the area in square feet.
The best way to do this is convert it all to inches. 148 inches by 143 inches. This gives you 21,164 square inches. Divide by 144 to get a total of 147 square feet.
143 is not prime - we can see this because it is 1 less than a square. x^2-1 = (x+1)(x-1), and for 143, x=12. Thus, 143=11*13.
There are infinitely many possibilities. One pair can be 143 and -1, while the other can be -143 and 1.