genyjoannerubiera
29.01.2020 •
Mathematics
If the radius of a circle with an area of 125 mm squared is reduced by half, what is the area of the new circle?
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Ответ:
Step-by-step explanation:
πr² = 125 mm²
Now radius = r/2
New circle's area = π(r/2)² = πr²/4 = 125/4 = 31.25 mm²
Ответ:
3267
Step-by-step explanation: I did it for the points