A cubical block of side 10 cm is surmounted by a hemisphere. what is the largest diameter that the hemisphere can have? find the cost of painting the total surface area of the solid so formed, at the rate of rs. 5 per sq. cm.
eminemrules101:
I think it
The rate is really
the rate is rs. 5/ sq. Metre
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Answered by
12
the largest diameter the hemisphere can have is 10 cm
lateral surface area of hemisphere = 2 r^2 × 3.14
= 157 cm^2
area of base of hemisphere = 3.14 × r ^2
= 78.5 cm ^2
area painted = 678.5 cm ^2
cost = rs 3392.5
lateral surface area of hemisphere = 2 r^2 × 3.14
= 157 cm^2
area of base of hemisphere = 3.14 × r ^2
= 78.5 cm ^2
area painted = 678.5 cm ^2
cost = rs 3392.5
Answered by
11
This is what I am getting
Ur question is wrong, the rate is rs.5 per 100 sq.cm(I checked it with my question-this question had come in an exam for me)
So here u go
Ur question is wrong, the rate is rs.5 per 100 sq.cm(I checked it with my question-this question had come in an exam for me)
So here u go
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