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16-03-2017
Mathematics

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What is the exact area of a circle with a radius of 31 cm?
A. 15.5 cm²
B. 31 cm²
C.961 cm²
D.240.25 cm²

Respuesta :

ritikpurohit220 ritikpurohit220

16-03-2017

we know that area of circle =[tex] \pi r ^{2} [/tex]
so
[tex] \pi =3.14,and r=31 [/tex]
then 3.14x31x31=3017.54

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