Test:
Circles I - Normal
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Question 1:
Find the area of the circle:
A
$78.5c{m}^{2}$
B
$15.7c{m}^{2}$
C
$62.8c{m}^{2}$
D
$31.4c{m}^{2}$
Question 2:
Find the circumference of the circle:
A
$118.4cm$
B
$75.4cm$
C
$37.7cm$
D
$455.4cm$
Question 3:
Find the area of a circle with a diameter:
$d=15cm$
A
$176.71c{m}^{2}$
B
$47.12c{m}^{2}$
C
$706.86c{m}^{2}$
D
$148.04c{m}^{2}$
Question 4:
A circle has a radius of
$7cm$
. What is the diameter of the circle?
A
$43.9cm$
B
$3.5cm$
C
$14cm$
D
$11cm$
Question 5:
Find the measure of the angle
$\alpha $
:
A
${80}^{\circ}$
B
${85}^{\circ}$
C
${90}^{\circ}$
D
${87}^{\circ}$
Question 6:
Find the area of a sector:
A
$125.7c{m}^{2}$
B
$157.1c{m}^{2}$
C
$314.2c{m}^{2}$
D
$103.7c{m}^{2}$
Question 7:
Find the arc length:
A
$6.28cm$
B
$10.47cm$
C
$15.71cm$
D
$7.85cm$
Question 8:
Calculate the circumference of a circle if a radius is
$11cm$
A
$69.12cm$
B
$138.23cm$
C
$108.57cm$
D
$380.13cm$
Question 9:
Calculate the area of a circle if radius is
$8cm$
A
$50.27c{m}^{2}$
B
$201.06c{m}^{7}$
C
$402.12c{m}^{2}$
D
$78.96c{m}^{2}$
Question 10:
Calculate the area of a circle if circumference is
$72\pi cm$
A
$517.6c{m}^{2}$
B
$4071.5c{m}^{2}$
C
$1017.9c{m}^{2}$
D
$226.2c{m}^{2}$
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