Answer:
The area is 490.9 cm^2 and the circumference is 78.5 cm
(using a calculator to evaluate π i.e the answer might be slightly different if you use π = 3.14 (lower accuracy) and so on)
Explanation:
The formula for area of a circle is,
A = πr^2
here, r = radius = 12.5 cm
A = π(12.5)^2
A = π(156.25) cm^2
A = 490.9 cm^2 (using a calculator to multiply by π)
The formula for circumference of a circle is,
C = 2πr
so,
C = 2π(12.5)
C = 25π
C = 78.5 cm