He would use 9 bills, and 5 coins. (fours $10, one $5, four $1. three quarters, one dime, and one penny). I calculated it all to make sure the total came out as 49.86
Answer:
163.3m²
Step-by-step explanation:
area = Pi(r²)
r = d / 2
r = 12
12² = 144
144 x 3.14 = 452.16
diameter of bigger circle = 24 + 4 (2 on each side)
28 / 2 = 14
14² = 196
196 x 3.14 = 615.44
sidewalk = bigger - smaller
sidewalk = 615.44 - 452.16
sidewalk = 163.3
ok turn 7/5 and 3/5 into a decimal
here let me help you
3/5 = 0.6
7/5 = 1.4
1.4 / 0.6 = 2.3 repeat
then turn it back into a fraction which is 2 3/10
this is how I do it by the way.
