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Directions: Choose the letter of the correct anwer. Use = 3.14. Perform this
on a sheet of paper. (Note: circles are not drawn to scale)
1. What is the area of the circle?
A 21.98 m
B. 43.96 m2
C. 153.86 m
D. 250.80 m
7 m
2. What is the area of the circle?
A. 152.16 cm2
B. 252.16 cm
C. 352.16 cm
D. 452.16 cm
12 cm
3. What is the area of the circle?
A. 606.5 mm2
B. 706.5 mm
C. 806.5 mm
D. 906.5 mm2
30 mm
4. What is the area of a circle with the diameter of 10 cm?
A. 68.5 cm
B. 78.5 cm
C. 88.5 cm
D. 108.5 cm
5. What is the area of a circle with the diameter of 20 dm?
A. 214 dm2
B 314 dm2
C. 324 dm?
D. 414 din
Answers & Comments
Verified answer
Answer:
Use the formula:
If the diameter is only given, divide it's length by 2 to get the radius.
1. ➠ C. 153.86m²
2. ➠ D. 452.16 cm²
3. ➠ B. 706.5 mm²
4. ➠ B. 78.5 cm²
5. ➠ B. 314 dm²