The concentration of a drug in a patient's bloodstream t hours after injection is given by C =
1 answer:
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Answer:
44m
Step-by-step explanation:
A = r² = 154
= 22/7 * r² = 154
= r² = 154 * 7/22
= r² = 49
= r = √49
= r = 7m
Perimeter of circle = 2r
= 2 * 22/7 * 7
= 44/7 * 7
= <u>44 m</u>
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