25.13cm^2 or 8pi. The radius of a circle is 2 x pi x r^2. R is the radius. 2 x pi x 2^2cm -> 2 x pi x 4cm -> 8cm x pi -> 25.13cm^2. Leaving the answer in terms of pi would be 8pi.
k-3+3<5+3 is the explanation and the answer is k<8
54. 30
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27 2. 10 3
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9 3. 5 2
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3 3
They only have 3 and two in common when you fully factor them. 3×2= 6
6 is the greatest common factor.
