
Understanding Circle Areas
Authored by Perepu Ramesh
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10th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the area of a circle with a radius of 5 cm?
50 cm²
100 cm²
31.4 cm²
78.5 cm²
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculate the area of a circle with a diameter of 10 m.
78.54 m²
100.00 m²
50.24 m²
31.42 m²
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the radius of a circle is doubled, how does the area change?
The area decreases by a factor of 4.
The area remains the same.
The area increases by a factor of 4.
The area increases by a factor of 2.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Find the area of a circle with a radius of 7.5 inches.
120.50 square inches
150.80 square inches
176.71 square inches
200.00 square inches
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the area of a circle with a circumference of 31.4 cm?
100 cm²
50.3 cm²
78.5 cm²
62.8 cm²
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculate the area of a circle with a radius of 2.5 feet.
15.70 square feet
10.00 square feet
31.42 square feet
19.63 square feet
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the area of a circle is 50.24 cm², what is its radius?
6 cm
3 cm
4 cm
5 cm
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