A 50 foot ladder is placed against a building so that it touches a point 40 feet above the ground. The distances ( in feet ) from the foot of the ladder to the building is

Question

a. 10
b. 20
c. 30
d. 45
e. 60

please answer and explain

Answer 1

Pythagorean Theorem:

40^2 + b^2 = 50^2

1,600 + b^2 = 2,500

b^2 = 900

b = 30

Answer 2

I understand now, like a triangle

a^2 + b^2 = c^2

thank you

Answer 3

Yes!

You're welcome.