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QUIZ

8th
grade

Mathematics

66%

accuracy

19

plays

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3 years

Mathematics

8th

grade

Circle calculations

user

19
plays

10 questions

10 questions

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1. Multiple Choice
2 minutes
1 pt
Find the area of this circle.

Take
$\pi$ =3.142
$A=78.55\ cm^2$
$A=70.63\ cm^2$
$A=50.71\ cm^2$
$A=80\ cm^2$
2. Multiple Choice
2 minutes
1 pt
What is the area of this semicircle ?
d = 8 cm

Take
$\pi$ =3.142
50.272 cm²
80 cm²
200.9 cm²
25.1 cm²
3. Multiple Choice
2 minutes
1 pt
What is the formula to find the area of a circle?
πr²
2πr
√π
π2r
4. Multiple Choice
2 minutes
1 pt
What is the formula to find the circumference of a circle?
πr²
2√π

$\pi d$
√π
5. Multiple Choice
2 minutes
1 pt
Work out the perimeter.
$\pi$ =3.142
20.568 cm
12.562 cm
30 cm
20 cm
6. Multiple Choice
2 minutes
1 pt
Find the circumference.
Take
$\pi$ =3.142
60.4 cm
40 cm
62.8 cm
55.6 cm
7. Multiple Choice
2 minutes
1 pt
If the diameter of a circle is d=28 cm. What is its radius
r=10 cm
r=14 cm
r=13.5 cm
r=28 cm
8. Multiple Choice
2 minutes
1 pt
Find the perimeter of this shape. (
$\pi=3.142$
14 m
193.444 m
16.777 m
191.988 m
9. Multiple Choice
2 minutes
1 pt
Is the red line a radius or diameter of the circle?
Radius
Diameter
10. Multiple Choice
2 minutes
1 pt
Find the area of this shape.
A=500 cm²
A=258 cm²
A=745.469 cm²
A=245.3 cm²
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