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MATH SOLVE
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A semicircle has an area of 76.97 km² . Find its radius
4 months ago
Q:
A semicircle has an area of 76.97 km² . Find its radius
Accepted Solution
A:
Area of a semicircle = 1/2 πr²
1/2 πr² = 76.97
Multiply both sides by 2:
πr² = 153.94
Divide both sides by π:
r² = 49
Square root both sides:
r=√49
r = 7
Answer: r = 7