Question

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.​

Answer 1

b=2√7 ≈ 5.29 meters

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