2. An observatory has the shape of a right circular cylinder surmounted b a hemisphere. If the radius of the cylinder is 14 ft and its altitude measures 30 ft. what is the surface area of the observatory? If 1 gal of paint covers 300 ft, how many gallons are needed to paint the surface if it requires two coats?
2. An observatory has the shape of a right circular cylinder surmounted b a hemisphere. If the radius of the cylinder is 14 ft and its altitude measures 30 ft. what is the surface area of the observatory? If 1 gal of paint covers 300 ft, how many gallons are needed to paint the surface if it requires two coats?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
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and the
- 12 cm
2. An observatory has the shape of a right circular cylinder surmoUfed Dya
hemisphere. If the radius of the cvlinder is 14 ft and its altitude measures 30 ft. what
is the surface area of the observatory? If 1 gal of paint covers 300 ft“, how many
gallons are needed to paint the surface if it requires two coats?
30 t
- 14 ft -
A leather soccer boa!l has an inside diameter of 8.5 in and a thickness of 0.1 in. Find
the volume of leather needed for its construction.
An igloo or Eskimo hut is built in the form of a hemispherical shell with an ins
of 2 ft and weighing 40 lb per cu. ft, tind the weight of the igloo, neglectina
ins 0.04 per cent carbon dioxide, find the amoU
diameter of 12 ft. If the igloo is constructed of snow blocks having a uniform thickr
entrance. Also, if fresh air
O when
entilated."
Transcribed Image Text:12 cm
and the
- 12 cm
2. An observatory has the shape of a right circular cylinder surmoUfed Dya
hemisphere. If the radius of the cvlinder is 14 ft and its altitude measures 30 ft. what
is the surface area of the observatory? If 1 gal of paint covers 300 ft“, how many
gallons are needed to paint the surface if it requires two coats?
30 t
- 14 ft -
A leather soccer boa!l has an inside diameter of 8.5 in and a thickness of 0.1 in. Find
the volume of leather needed for its construction.
An igloo or Eskimo hut is built in the form of a hemispherical shell with an ins
of 2 ft and weighing 40 lb per cu. ft, tind the weight of the igloo, neglectina
ins 0.04 per cent carbon dioxide, find the amoU
diameter of 12 ft. If the igloo is constructed of snow blocks having a uniform thickr
entrance. Also, if fresh air
O when
entilated.
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