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2 years ago

15

The diagram below shows a sign that Annie designed. It is made of two circles that share the same center. Annie wants to use str

ing to create a border around the outermost edge of the sign. About how many inches of string does Annie need?

1 answer:

Pavel [41]2 years ago

3 0

132 in

Step-by-step explanation:

Take the total radius = 18+3 = 21= R (say)
Simply use the formula for the circumference i.e. 2*pi*R
2*22/7*21= 132

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