Quiz about Circles, arc length, sector, equations simple

Question 1

Find the area of the circle

Accepted Answer

254.34

Answer

56.52

Answer

1017.36

Answer

113.04

Question 2

find the area of the circle below.

Accepted Answer

28.26 cm

Answer

100 cm

Answer

225 cm

Answer

9 cm

Question 3

Find the arc length of arc AB.

Accepted Answer

12.57 units

Answer

75.40 units

Answer

24 units

Answer

125.66 units

Question 4

Find the arc length.

Accepted Answer

6.28 cm

Answer

37.70 cm

Answer

28.27 cm

Answer

9.42 cm

Question 5

What is the area of the shaded region? Round to the nearest hundredth. (Hint: Area of a triangle is 1/2*b*h)

Accepted Answer

28.54

Answer

78.53

Answer

314.16

Answer

58.54

Question 6

Find the area of the shaded region.

Accepted Answer

125.7 cm2

Answer

40 cm2

Answer

103.7 cm2

Answer

33 cm2

Question 7

Alison is jogging on a circular track that has a radius of 140 feet. She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

Accepted Answer

94

Answer

47

Answer

74

Answer

123

Question 8

Find the arc length of the bolded arc.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 9

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

Accepted Answer

65.94 ft

Answer

10.5 ft

Answer

42 ft

Answer

131.95 ft

Question 10

What is the equation of a circle with radius 2 and center (3, 4)?

Accepted Answer

(x - 3)² + (y - 4)² = 4

Answer

(x + 3)² + (y + 4)² = 2

Answer

(x - 3)² + (y - 4)² = 2

Answer

(x + 3)² + (y + 4)² = 4

Question 11

What is the equation of a circle with radius 4 and center (0, 8)?

Accepted Answer

x² + (y - 8)² = 16

Answer

(x - 8)² + y² = 4

Answer

x² + (y - 8)² = 4

Answer

x² + (y + 8)² = 16

Question 12

In the equation (x - 3)²+ (y - 2)²= 16, the center of the circle is...

Accepted Answer

(3, 2)

Answer

(-3, -2)

Answer

(-2, -3)

Answer

(2, 3)

Question 13

Write the equation of a circle with center (7, 0) with radius 3.

Accepted Answer

(x - 7)² + y² = 9

Answer

x² + (y -7)² = 9

Answer

(x - 7)² + y² = 3

Answer

x² + (y -7)² = 3

Question 14

What are the coordinates of the center and the radius of the circle with equation:

(x - 4)² + (y - 3)² = 25 ?

Accepted Answer

Center (4,3)

Radius = 5 units

Answer

Center (4,3)

Radius = 25 units

Answer

Center (-4,-3)

Radius = 25 units

Answer

Center (-4,-3)

Radius = 5 units

Question 15

What is the equation for this circle?

Accepted Answer

x2+y2=9

Answer

(x+1)²+(y+1)²=9

Answer

x2+y2=6

Answer

x2+y2=3

Question 16

Which graph corresponds to
(x-4)²+ (y+4)²=25

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 17

Which points lie on the circle represented by the equation (x+2)²+ (y+2)² = 25

Accepted Answer

(-6, -5)

Accepted Answer

(-2, -7)

Answer

(-2, -2)

Answer

(6,4)

Answer

(8,8)

Question 18

Write the standard equation of the circle with the given center and radius; center (0,0) and radius: 3

Accepted Answer

x2+y2=9

Answer

x2+y2=4

Answer

x2+y2=81

Circles, arc length, sector, equations simple

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