A hemispherical bowl of thickness 1 cm and external diameter 10 cm is to be painted all over. What is the cost of painting at the rate of rs. 0.70 per cm^2?
Answers
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Answer:
A hemisphere is a kind of geometric object characterized by a flat face in the form of a circle and a curved surface area. A hemisphere has just one edge and no vertices on its surface. Because it does not consist of polygons, a polyhedron cannot be constructed from it.
The asnwer is Rs 905.14
Step-by-step explanation:
The distance must be traveled from one location on a circle to another on the same circle through the circle's center. It is also the farthest point away from the center of the circle. In addition, it is twice as large as the radius.
inner radius = 10/2 = 5 cm
outer radius = 5 + 1 = 6 cm
total area to be painted = curved surface area of bowl * 2
C.S.A. = 2 *22/7* r *r
=2*22/7*6*6
=1584/7*2
=3168/7 cm*cm
cost = 3168/7 * 2
= Rs 905.14 Ans.
To learn more about hemispheres, click on the link below.
https://brainly.in/question/143176
To learn more about polygons, click on the link below.
https://brainly.in/question/65978
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