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Surface area of a sphere
Surface area of a sphere
Theory
Theory
Procedure
Simulator
Self Evaluation
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1)
In a Sphere | Sphere Radius = 85 unit | Calculate Sphere Surface Area = ??
90746 unit²
104358 unit²
81671 unit²
77134 unit²
2)
In a Sphere | Sphere Radius = 49 unit | Calculate Sphere Surface Area = ??
31664.39 unit²
21109.59 unit²
30156.56 unit²
28648.73 unit²
3)
In a Sphere | Sphere Radius = 19 unit | Calculate Sphere Surface Area = ??
2493.79 unit²
7254.66 unit²
None of these
3173.91 unit²
4)
What is the surface area of a sphere of radius 6 inches?
108π in²
36π in²
288π in²
144π in²
5)
What is the surface area of a sphere of diameter 42 cm? Use (22/7) as an approximation for π
5,544 cm²
1,848 cm²
22,176 cm²
38,808 cm²
6)
The surface area of a sphere is directly proportional to:
Its diameter
Its circumference
Its volume
Its radius
7)
If the radius of a sphere is doubled, how does its surface area change?
It becomes half of the original surface area.
It becomes one-fourth of the original surface area.
It becomes double the original surface area.
It becomes four times the original surface area.
8)
What is the formula for the surface area of a sphere?
A = 2πr
A = 4πr
A = 2πr^2
A = 4πr^2
9)
The surface area of a sphere is doubled by increasing its radius by a factor of:
4
8
2
6
10)
What is the ratio of the surface area of a sphere to the surface area of a cylinder with the same radius and height?
1:1
2:1
3:1
1:2