afrazi6914
Answered

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dhukamaira

Answer

B) 287.6cm²

Step-by-step explanation:

First you need the radius, since you have the diameter you have to divide it by 2 in order to get the radius (8.4 divided by 2 = 4.2) then use the formula A=2πrh and plug in the radius and your height (h) which is 10.9cm into the formula.

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