find the ratio of the total surface area of the semi sphere with diameter 28cm to surface area of a sphere having radius 14 cm
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Answered by
58
Semi-Sphere
Diameter= 28cm
Radius= 28/2= 14cm
T.S.A of Semi-Sphere= 3πr²
=>3×π×14×14
Sphere
Radius= 14 cm(given)
T.S.A of Sphere= 3πr²
=> 4×π×14×14
Ratio = T.S.A of Semi-Sphere/T.S
A of Sphere
3×π×14×14/4×π×14×14
===> 3/4
===> 3:4, is the ratio.
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Diameter= 28cm
Radius= 28/2= 14cm
T.S.A of Semi-Sphere= 3πr²
=>3×π×14×14
Sphere
Radius= 14 cm(given)
T.S.A of Sphere= 3πr²
=> 4×π×14×14
Ratio = T.S.A of Semi-Sphere/T.S
A of Sphere
3×π×14×14/4×π×14×14
===> 3/4
===> 3:4, is the ratio.
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Answered by
9
The ratio of the total surface area of the semi sphere with diameter 28cm to surface area of a sphere having radius 14 cm is 1:2
Step-by-step explanation:
Diameter of semi sphere = 28 cm
Radius of semi sphere =
Total surface area of semi sphere =
Radius of sphere = 14 cm
Total surface area of sphere =
The ratio of the total surface area of the semi sphere with diameter 28cm to surface area of a sphere having radius 14 cm =
Hence the ratio of the total surface area of the semi sphere with diameter 28cm to surface area of a sphere having radius 14 cm is 1:2
#Learn more :
Find the area in cm square of a semi circl of radius 14 cm
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