A circular fountain has a radius of 9.4 feet. Find its diameter and circumference to the nearest hundredths
To find the diameter, multiply the radius by two. So, in this case, 9.4 × 2 = 18.8. To find the circumference, you simply multiply \(\pi\) (pi) by the diameter. So- \(\pi\) × 18.8 = 59.032
Diameter (rounded)- 19
Circumference (rounded)- 60
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Answer:
Step-by-step explanation:
Use the formula.
d = 2r The diameter of a circle is the same as 2 times the radius.
d = 2(5.6) The radius is 5.6. Substitute 5.6 for r.
d = 11.20 Multiply.
Use the formula.
C = πd
C = π(11.20) The diameter is 11.20. Substitute 11.20 for d.
C ≈ 3.14(11.20) Substitute 3.14 for π.
C ≈ 35.17 Multiply.
The diameter is 11.20 feet.
The circumference is approximately 35.17 feet.