Which formula is correct when using an extension ladder to bridge an alley?
A.) The portion of the ladder that rests should be one-half ofthe distance spanned
B.) The portion of the ladder that rests should be one-fourthof the distance spanned
C.) The portion of the ladder that rests should be one-thirdof the distance spanned
D.) The portion of the ladder that rests should be one-eighthof the distance spanned
The portion of the ladder that rests should be one-half ofthe distance spanned