Find the radius of each circle. Round your answer to the nearest tenth.
circumference = 12.6 m
circumference = 18.8 km
circumference = 50.3 mi
circumference = 44.6 in
circumference = 29.5 yd
Find the radius of each circle. Round your answer to the nearest tenth. circumference = 12.6 m circumference = 18.8 km circumference = 50.3 mi circumference = 44.6 in circumference = 29.5 yd
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To find the radius of a circle from its circumference, you can use the formula for circumference, which is:
[ C = 2pi r ]
where ( C ) is the circumference and ( r ) is the radius. To find the radius, rearrange the formula:
[ r = frac{C}{2pi} ]
Now, let’s calculate the radius for each given circumference:
1. Circumference = 12.6 m
( r = frac{12.6}{2pi} approx frac{12.6}{6.2832} approx 2.0 ) m
2. Circumference = 18.8 km
( r = frac{18.8}{2pi} approx frac{18.8}{6.2832} approx 3.0 ) km
3. Circumference = 50.3 mi
( r = frac{50.3}{2pi} approx frac{50.3}{6.2832} approx 8.0 ) mi
4. Circumference = 44.6 in
( r = frac{44.6}{2pi} approx frac{44.6}{6.2832} approx 7.1 ) in
5. **