Circle calculations

Circle calculations

8th Grade

10 Qs

quiz-placeholder

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Circle calculations

Circle calculations

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Medium

Created by

. Mohyee

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Find the area of this circle. 



Take

 π\pi  =3.142

 A=78.55 cm2A=78.55\ cm^2  

 A=70.63 cm2A=70.63\ cm^2  

 A=50.71 cm2A=50.71\ cm^2  

 A=80 cm2A=80\ cm^2  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

What is the area of this semicircle ?
d = 8 cm



 Take

 π\pi  =3.142

50.272 cm2

80 cm2

200.9 cm2

25.1 cm2

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the formula to find the area of a circle?

πr2

2πr

√π

π2r

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the formula to find the circumference of a circle?

πr2

2√π


πd\pi d

√π

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Work out the perimeter.

 π\pi  =3.142

20.568 cm

12.562 cm

30 cm

20 cm

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Find the circumference.

Take

 π\pi  =3.142

60.4 cm

40 cm

62.8 cm

55.6 cm

7.

MULTIPLE CHOICE QUESTION

2 mins • 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

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