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Probability
Question
A table cover 4 m x 2 m is spread on a table. Find the cost of polishing the top of the table at र40 per square metre of 25 cm table cover is hanging all round the table.
Solution
For table cover
l = 4 – (0.25 + 0.25)
| ∵ 25 cm = 0.25 m
= 3.5 m b = 2 – (0.25 + 0.25) = 1.5 m
∴ Area of the cover = l x b
= 3.5 x 1.5 = 5.25 m2 Cost of polishing the top of the table at र 40 per square metre = 5.25 x 40 = र 210.
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Some More Questions From Probability Chapter
Parveen wanted to make a temporary shelter for her car, by making a box-like structure with tarpaulin that covers all the four sides and the top of the car (with the front face as a flap which can be rolled up). Assuming that the stitching margins are very small, and therefore negligible, how much tarpaulin would be required to make the shelter of height 2.5 m, with base dimensions 4 m × 3 m?
A table cover 4 m x 2 m is spread on a table. Find the cost of polishing the top of the table at र40 per square metre of 25 cm table cover is hanging all round the table.
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Mock Test Series
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