Test:
Circles I - Normal
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Question 1:
Find the area of the circle:
A
$78.5c{m}^{2}$
B
$62.8c{m}^{2}$
C
$31.4c{m}^{2}$
D
$15.7c{m}^{2}$
Question 2:
Find the circumference of the circle:
A
$37.7cm$
B
$118.4cm$
C
$455.4cm$
D
$75.4cm$
Question 3:
Find the area of a circle with a diameter:
$d=15cm$
A
$47.12c{m}^{2}$
B
$176.71c{m}^{2}$
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
$3.5cm$
B
$14cm$
C
$43.9cm$
D
$11cm$
Question 5:
Find the measure of the angle
$\alpha $
:
A
${80}^{\circ}$
B
${90}^{\circ}$
C
${85}^{\circ}$
D
${87}^{\circ}$
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