Step-by-step explanation:
leader=31 ft =c
ladder from building =6 ft =a
top of the ladder from the roof of the building =18ft
The distance btwn the the top of the ladder and bottom of the ladder =b
c2-a2=b2
(31×31)-(6×6)=b2
=961-36=b2
925=b2 (find spuareroot for both sides)
b=31.41
length of the building =31.41+18
. =48.41 = 48
