- Circumference and Area of Circles
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- Distinguishing Between the Area and Circumference of a Circle

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# Distinguishing Between the Area and Circumference of a Circle Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to **Distinguishing Between the Area and Circumference of a Circle**. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using **Show Answer** button. You can use **Next Quiz** button to check new set of questions in the quiz.

**Q 1 - James wants to buy cookies for his friend. The radius of a cookie is 3.6 inches. What is the cookie’s circumference?**

### Answer : B

### Explanation

**Step 1:**

Given radius r = 3.6 in

**Step 2:**

Circumference of the Cookie = 2πr = 2(3.14)3.6 = 22.61 in

**Q 2 - Charles wants to put a circular table in middle of his room. The diameter of the table is 4.8 meters. Calculate how much area is covered by the table?**

### Answer : D

### Explanation

**Step 1:**

Given diameter = 4.8 m ; radius r = 4.8/2 = 2.4 m

**Step 2:**

Area covered by table = πr^{2} = (3.14)(2.4)(2.4) = 18.09 square meters

**Q 3 - Steve makes a delicious burger. The diameter of the burger was 8.4 cm. What was the area of burger?**

### Answer : A

### Explanation

**Step 1:**

Given diameter = 8.4 cm ; radius r = 8.4/2 = 4.2 cm

**Step 2:**

Area of Circle = πr^{2} = (3.14)(4.2)(4.2) = 55.39 square cm

**Q 4 - Rhea wants to make a round photo frame for her sister. The radius of the photo frame is 10.2 cm. What is the circumference of photo frame?**

### Answer : C

### Explanation

**Step 1:**

Given radius r = 10.2 cm

**Step 2:**

Circumference of Photo frame = 2πr = 2(3.14)10.2 = 64.06 cm

**Q 5 - Alice buys a round dinner table. The radius of dinner table is 2.8 meters. What is the area of table?**

### Answer : C

### Explanation

**Step 1:**

Given radius r = 2.8 m

**Step 2:**

Area of Table = πr^{2} = (3.14)(2.8)(2.8) = 24.62 square meters

**Q 6 - Jacob purchases a bowl. The radius of the bowl is 7.2 cm. What is the circumference of the bowl?**

### Answer : A

### Explanation

**Step 1:**

Given radius r = 7.2 cm

**Step 2:**

Circumference of Bowl = 2πr = 2(3.14)7.2 = 45.22 units

**Q 7 - The area of a circle is 47.76 square meters. What is the approximate length of its radius?**

### Answer : B

### Explanation

**Step 1:**

Area of Circle = πr^{2} = (3.14) r^{2} = 47.76 square meters

**Step 2:**

r^{2} = 47.76/3.14 = 15.21; Taking square roots Radius r = 3.9 m

**Q 8 - Eva makes a round pizza. If the cake is 6.4 inches in radius, how many square inches of cheese layer does she need to put on the pizza?**

### Answer : D

### Explanation

**Step 1:**

Given radius r = 6.4 in

**Step 2:**

Area of Cheese layer = πr

**Step 3:**

**Q 9 - A Ferris wheel has a diameter of 210 feet. How many feet will the Ferris wheel rotate in one complete turn?**

### Answer : A

### Explanation

**Step 1:**

Given diameter = 210 ft ; radius r = 210/2 = 105 ft

**Step 2:**

Circumference of Ferris Wheel = 2πr = 2(3.14)105 = 659.4 ft

**Q 10 - The circumference of a circle is 16.52 feet. What is the approximate length of the radius?**

### Answer : C

### Explanation

**Step 1:**

Circumference of Circle = 2πr = 2(3.14)r = 16.52 ft

**Step 2:**

Radius r = 16.52/(2 × 3.14) = 2.63 ft