Correct me if i'm wrong, but i think it's b, since you add the exponents and keep the 4 the same.
The circumference of any circle is (pi) x (the diameter of the circle).
The problem gives you both numbers, so all you have to do is multiply them.
Circumference = (pi) x (diameter) = (3.14) x (21cm) = <em>65.94 cm .</em>
Answer:
DO PROPORTIONS
Step-by-step explanation:
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Answer:
Hi! The answer to your question is x = 7
Step-by-step explanation:
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