Abag contains 12 pennies, 9 nickels, 11 dimes and 3 quarters. a coin is selected at random from the bag. find the probability.
p (more than 9 cents)

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm