100) Mat pays $1 to draw a ball from a barrel full of possible prizes. In the barrel there are the following prizes in the balls, one $400 gift card, four $120 gift cards, and ten $70 gift cards. If there
are a total of 5000 balls in the barrel, find the expected value for Frank's winnings for the first
drawing.

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.