Practice Circles (3) - Chapter 4 : Geometry

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10 questions

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6 sample questions

Question 1.
What is the radius of a circle if the diameter is 8 cm?
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Recall that Radius = Diameter/2.
Question 2.
Find the circumference of a circle with a diameter of 10 cm.
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Use the formula C = πd.
3Question 3.
What is the relationship between radius and diameter?
- Diameter is half of the radius
- Radius is twice the diameter
- Diameter is twice the radius
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Recall the formula D = 2R.
4Question 4.
True or False: The circumference of a circle can be calculated with the formula Circumference = πd.
- True
- False
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Look back at our earlier formula discussion.
Question 5.
A circular park has a radius of 12 m. What is the area of the park? (Use the formula A = πr².)
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Remember the area formula and substitute the radius.
Question 6.
If the diameter of a pool is 24 ft, how many feet long is the surrounding pathway if it adds 2 ft around the pool?
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First, find the new diameter and then use the circumference formula.

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