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प्रश्न
The length of the longest pole that can be kept in a room (12 m × 9 m ×8 m) is
पर्याय
29 m
21 m
19 m
17 m
उत्तर
17 m
Length of the longest pole that can be kept in a room = Length of the diagonal of the room
`=sqrt("l"^"2+""b"^2 + "h"^2 m)`
`= sqrt((12)^2 + (9)^2 + (8)^2 "m")`
`= sqrt(289) "m"`
`= 17 "m"`
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