Find the circumference of both circle

Blue Circle: 69.11504

Green Circle: 138.2301

Step-by-step explanation:

Blue Circle:

Circumference = 2 (Pi) R

C = 2 (3.14) 11

C = 69.11504

Green Circle:

Circumference = 2 (Pi) R

C = 2 (3.14) 22

C = 138.2301

Hope this helps!

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Green circle: 138.16

Blue circle: 69.08

Step-by-step explanation:

Formula for circumference: 2πR

π ≈ 3.14

Green circle:

Radius: 22

Apply formula:

2 * 3.14 * 22 = 138.16

Blue circle:

Radius: Half of the radius of the big one, 11

Apply the formula once more:

2 * 3.14 * 11 = 69.08

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!