1. What is the are?
Radius = 9
Formula: Area = π r²
Solution: Area = 3.14 (9)²
Area = 3.14 (81)
Area = 254.34 cm
2. What is the area?
Diameter = 12. So the radius is 6.
Solution: Area = 3.14 (6)²
Area = 3.14 (36)
Area = 113.04 inch
3. What is the area?
Radius = 4
Solution: Area = 3.14 (4)²
Area = 3.14 (16)
Area = 50.24 feet
4. What is the area of the clock?
Diameter = 30. So the radius is 15.
Solution: Area = 3.14 (15)²
Area = 3.14 (225)
Area = 706.5 cm
5. What is the area?
Radius = 2
Solution: Area = 3.14 (2)²
Area = 3.14 (4)
Area = 12.56 meters
6. What is the circumference?
Radius = 3.5
Formula: C = 2 π r
Solution: C = 2 x 3.14 x 3.5
C = 6.28 x 3.5
C = 21.98 meters
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Answers & Comments
1. What is the are?
Radius = 9
Formula: Area = π r²
Solution: Area = 3.14 (9)²
Area = 3.14 (81)
Area = 254.34 cm
2. What is the area?
Diameter = 12. So the radius is 6.
Formula: Area = π r²
Solution: Area = 3.14 (6)²
Area = 3.14 (36)
Area = 113.04 inch
3. What is the area?
Radius = 4
Formula: Area = π r²
Solution: Area = 3.14 (4)²
Area = 3.14 (16)
Area = 50.24 feet
4. What is the area of the clock?
Diameter = 30. So the radius is 15.
Formula: Area = π r²
Solution: Area = 3.14 (15)²
Area = 3.14 (225)
Area = 706.5 cm
5. What is the area?
Radius = 2
Formula: Area = π r²
Solution: Area = 3.14 (2)²
Area = 3.14 (4)
Area = 12.56 meters
6. What is the circumference?
Radius = 3.5
Formula: C = 2 π r
Solution: C = 2 x 3.14 x 3.5
C = 6.28 x 3.5
C = 21.98 meters