Eight coins fit exactly on a rectangular sheet of paper when lined up in 4 columns and two rows. each coin is in the shape of a regular dodecagon, a polygon containing 12 sides. what fraction of the paper sheet will not be covered?

≅0.034

Step-by-step explanation:

The graph shows a rectangle and 8 dodecahedrons but a dodecahedron inscribed in a square is seen, so it is enough to calculate the fractions of areas between the square and the dodecahedron

Square area

Area of a right triangle  

Area fraction

≅0.034

Note: The fractions of the sides of the square and the right triangle are determined by assigning values to L

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.