P = 4a.....this is the perimeter of a square
P = 4(180)
P = 720 ft
and if the spray cost 0.11 per ft......720 * 0.11 = 79.20 rounded to the nearest dollar is $ 79 <==
so we know she has sculptures and paintings, if she sold twice as many paintings as sculptures, that means that for every 2 paintings, she sold 1 sculpture, so the paintings and sculptures are on a 2:1 ratio.
we know she sold a total of 57, so we'll need to split 57 in a 2:1 ratio, we'll simply divide the whole amount of 57 by (2+1) and distribute accordingly.
![\bf \cfrac{paintings}{sculptures}\qquad 2:1\qquad \cfrac{2}{1}\qquad \qquad \cfrac{2\cdot \frac{57}{2+1}}{1\cdot \frac{57}{2+1}}\implies \cfrac{2\cdot 19}{1\cdot 19}\implies \cfrac{\boxed{38}}{19}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7Bpaintings%7D%7Bsculptures%7D%5Cqquad%202%3A1%5Cqquad%20%5Ccfrac%7B2%7D%7B1%7D%5Cqquad%20%5Cqquad%20%5Ccfrac%7B2%5Ccdot%20%5Cfrac%7B57%7D%7B2%2B1%7D%7D%7B1%5Ccdot%20%5Cfrac%7B57%7D%7B2%2B1%7D%7D%5Cimplies%20%5Ccfrac%7B2%5Ccdot%2019%7D%7B1%5Ccdot%2019%7D%5Cimplies%20%5Ccfrac%7B%5Cboxed%7B38%7D%7D%7B19%7D)
Answer:
Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40.
Step-by-step explanation:
241/4 or 60.25......................................