An elevator descends into a mine shaft at the rate of 6 meter per min.if the descend start from 10 meter above the ground level,how long will it take to reach -350meter?
Answers
Answered by
1
Sol : √8 + 4√32 - 6√2
= √(2 x 2 x 2 ) + 4√( 2 x 2 x 2 x 2 x 2 ) - 6√2
= √( 4 x 2 ) + 4√( 16 x 2 ) - 6√2
We have √4 = 2 and √16 = 4.
Now,
= 2√2 + 4 x 4 √2 - 6√2
= 2√2 + 16√2 - 6√2
= √2 ( 2 + 16 - 6 )
= √2 ( 18 - 6 )
= √2 x 12
= 12√2.Ans.
= √(2 x 2 x 2 ) + 4√( 2 x 2 x 2 x 2 x 2 ) - 6√2
= √( 4 x 2 ) + 4√( 16 x 2 ) - 6√2
We have √4 = 2 and √16 = 4.
Now,
= 2√2 + 4 x 4 √2 - 6√2
= 2√2 + 16√2 - 6√2
= √2 ( 2 + 16 - 6 )
= √2 ( 18 - 6 )
= √2 x 12
= 12√2.Ans.
Similar questions