moslehemad1234
moslehemad1234
09-04-2020
Mathematics
contestada
please help me with this
Respuesta :
Serasta
Serasta
09-04-2020
C because 42/2 is the radius of 21 and 21 squared is 441 and with pi that becomes 441pi
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SmartCookie04
SmartCookie04
09-04-2020
Answer:
C
Step-by-step explanation:
r=diameter ÷ 2
diameter is 42
42÷2=21
21²=441
Answer Link
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