The diameter of a circular placemat is 15 inches. devon wants to sew a border of lace around the placemat. if the lace he wants is sold by the foot, how many feet of lace will he need to purchase?

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

hi,

3. 12.15, you are correct.

4.2.01, your first digit is correct,

hope this !