Area, Circumference, Area of a Sector and Arc Length of a Circle
Authored by Rustom HS]
Mathematics
9th Grade
CCSS covered
Used 24+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate the area of a circle?
A = 2πr
A = πr^2
A = 3r^2
A = 0.5πr^2
Tags
CCSS.7.G.B.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the radius of a circle is 5 cm, what is its circumference?
20 cm
15.70795 cm
3.14159 cm
31.4159 cm
Tags
CCSS.7.G.B.4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to find the area of a sector in a circle?
(θ/360) * π * r^2
(θ/360) * 2π * r
(θ/180) * 2π * r
(θ/180) * π * r^2
Tags
CCSS.HSG.C.B.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the central angle of a sector is 51 degrees in a circle with radius 16 cm, what is the area of the sector?
36π cm^2
16π cm^2
48π cm^2
64π cm^2
Tags
CCSS.HSG.C.B.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate the arc length of a circle?
L = (x*C)/2πr
L = 2πr
L = r^2
L = (x*C)/360
Tags
CCSS.HSG.C.B.5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the radius of a circle is 10 cm and the central angle is 45 degrees, what is the arc length?
39.27π cm
8π cm
10π cm
3π cm
Tags
CCSS.HSG.C.B.5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between the radius and diameter of a circle?
The diameter is equal to the radius squared.
The diameter is half of the radius.
The diameter is less than the radius.
The diameter is equal to 2 times the radius.
Tags
CCSS.7.G.B.4
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