Sagot :
[tex]\huge\bold\color{pink}{Answer :}[/tex]
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[tex]B = π \: (2.5)²[/tex]
ー The ratio of A to B is given by :
[tex]A / B = π \: (10)² \: / \: π \: (2.5)²[/tex]
[tex]= (10)² \: / \: (2.5)²[/tex]
[tex]= (10 \: / \: 2.5)² = 4² = 16[/tex]