Question

a ladder 10m long is leaning against a wall. the foot of the ladder is 8m away from the wall. find the height up to which the ladder reaches the wall

Answer 1

By Pythagoras theorem,

10²=8²+height upto which the ladder reaches²

100-64=height2²

36=height²

6m=height up to which the ladder reaches.

Answer 2

Step-by-step explanation:

this question will be solved by Pythagoras theorem

the length of the ladder is given 10 metre

foot of the ladder away from the wall is 8 metre

(10)2-(8)2

10×10 - 8×8

100-64

=36 the square root of 36 will be 6

so answer is 6

we will take 10 square - 8 square means we have to multiply 10 × 10 and 8 × 8 so we will write 10 × 10 -8× 8 10 × 10 = 100 - 8 × 8 is equals to 64 so 100 -64 is equals to 36 now we will find out the square root of 36 so as we know the square root of 36 will be 6 because 6×6 is 36 answer will be 6