Directions :
Answer the following questions. Show your solutions.
Answers :
1. The radius of a circle is 9 centimeters. What is the area of the circle?
A - πr²
- 3.14 (9cm)²
- 3.14 (9cm)(9cm)
- 3.14 × 81cm
= 254.34cm²
2. The diameter of a circle is 12 meters. What is the area of the circle?
A - πr²
- 3.14 (6m)²
- 3.14 (6m)(6m)
- 3.14 × 36m
= 113.04m²
3. The radius of a circular rug is 4 feet. What is the area of the rug?
A - πr²
- 3.14 (4ft)²
- 3.14 (4ft)(4ft)
- 3.14 × 16ft
= 50.24ft²
4. The area of a coin is 3.14 square centimeters. What is the radius of the coin?
A - πr²
- 3.14 (1cm)²
- 3.14 (1cm)(1cm)
- 3.14 × 1cm
= 3.14cm²
5. The diameter of a bycicle wheel is 20 decimeters. What is the area of the wheel?
A - πr²
- 3.14 (20dm)²
- 3.14 (20dm)(20dm)
- 3.14 × 400dm
= 1256dm²
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