A ladder is 8 metres long . It leans against a wall with one end on the ground 6 metre from the wall. The other end just reaches a windowsill.

Calculate the height of the windowsill above the ground.

b=2√7 ≈ 5.29 meters

Step-by-step explanation:

think of it like a right triangle like in the picture with 8metre ladder as the hypotenuse

a²+b²=c²

6²+b² =8²

b²= 8²-6²=28

b=√28 =2√7 ≈ 5.29 meters

12/11c

or

12

c

11

incomplete question. how do you expect anyone to you when you do not post the question in its entirety?