The length of a ladder is exactly equal to the height of the wall it is resting against. Iflower end of the ladder is kept on a stool of height 3 m and the stool is kept 9 m awayfrom the wall, the upper end of the ladder coincides with the top of the wall. Then,the height of the wall is:

A. 12 m

B. 15 m

C. 18 m

D. 11 m

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1

Correct Answer :
15 m

Explanation :
No Explanation available for this question

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