a.
To find: The total surface area of a
a.
Answer to Problem 4PSA
The total area of the solid is
Explanation of Solution
Given Information:
Radius of a cone
Radius of a cylinder = Radius of a cone
Slant height of a cone
Height of a cone
Formula used:
Lateral surface area of a cone
Lateral surface area of a cylinder
Area of a circle
Calculation:
The given solid is formed by combining a cone and a cylinder
So, its total area
Lateral surface area of a cone
Lateral surface area of a cylinder
Area of a circle
Hence, the total area of the solid is
b.
To find: total area of a hemisphere with radius 6.
b.
Answer to Problem 4PSA
The total area of the hemisphere is
Explanation of Solution
Given Information:
Radius of the hemisphere
Formula used:
Total surface area of a hemisphere
Calculation:
We know that,
Total surface area of a hemisphere
As
Hence, the total area of the hemisphere is
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