A ladder that is 12,5m long rests against a wall with its foot 7,5m away from the wall.How far the ladder reaches up the wall?

Answer 1

Use the Pythagorean Theorem and solve for b.

a^2 + b^2 = c^2

7.5^2 + b^2 = 12.5^2
56.25 + b^2 = 156.25
b^2 = 156.25 - 56.25
b^2 = 100
b = 10

Answer 2

The foot of the ladder in 4.2 above moves 4m closer to the wall.How much further will the ladder now reach up the wall?

Answer 3

Use the Pythagorean theorem as I showed you above.

Answer 4

Thank you

Answer 5

You're welcome.